Question: When did Six Flags start airing commercials linking together all of their parks?
About the article "Six Flags", section "TV Commercials".

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In 2004, Six Flags began a series of commercials linking all of the parks.
The commercials were notable for a new mascot, "Mr. Six", an apparently feeble old man in a tuxedo and red bow tie.
In many of the commercials, Mr. Six would slowly exit a multi-colored bus, only to start frenetically dancing to the Vengaboys' "We Like to Party".
The commercials were an immediate hit and Mr. Six almost instantly became the official mascot, although he was initially retired after the 2005 season.
These ads have become widely parodied on the Internet, with faces from other Internet memes being superimposed over Mr. Six's face.
From 2008 to 2010, Six Flags' TV ads have a "Fun-O-Meter" in which the beginning of the ad may show something boring or embarrassing and a man's face judges it "One Flag!"
or sometimes "Two Flags!"
Then roller coasters and attractions of Six Flags are shown and says "Six Flags, More Flags, More Fun!"
for Six Flags parks.
However, the thick accent of the Asian man in the original commercials had drawn criticism for being an offensive caricature.
In 2009, the Mr. Six character came back from retirement and replaced the Asian man in Six Flags' ads, still using the Fun-O-Meter.
Since 2011, Six Flags' TV ads got a brand-new slogan "Go Big!
Go Six Flags!"
for its current Six Flags theme parks.
Six Flags White Water was constructed by Silver Dollar City, a theme park company known today as Herschend Family Entertainment, as a corporate sibling to their White Water park in Branson, Missouri, and first opened in 1984.
In June 1998, the park was the site of an "E. coli" outbreak, which sickened at least ten children, including the son of then-Atlanta Braves baseball player Walt Weiss.
In May 1999, the park was sold to the group of limited partners that own the nearby Six Flags Over Georgia theme park, with the park becoming "Six Flags White Water," and, like its sister park, being managed by Six Flags Theme Parks.
Today, the two parks operate together, despite being roughly 15 miles apart, with each offering promotions for the other.
Six Flags White Water is one of four stand-alone Six Flags water parks, and the only one of the group to not use the Hurricane Harbor name.
In late 2010, Six Flags began the process of removing licensed themes from attractions.
They terminated several licenses including their license with The Wiggles.
"Wiggles Water World" was rethemed to "Buccaneer Bay" in time for the 2011 season.
In July 2011, Six Flags introduced the Flash Pass at "Six Flags White Water", and was the first water park in the world to feature the virtual queue system for their water rides.
Six Flags White Water was the testing park of the new system and with huge success, nine more Six Flags water parks will be adding the system in 2012.
For the 2013 season, White Water added Typhoon Twister, a five-story bowl slide.
In August 2013, Six Flags announced the addition of Hurricane Harbor, a seven-acre water park at Six Flags Over Georgia.
When asked about the addition of a new water park when Six Flags already owned one in the area, communications manager Emily Murray replied, "With all the surveys that we’ve seen and the demand for a water park and the growth White Water has shown, White Water is still a large part of Six Flags and Harbor will complement each other."
As part of the same announcement, Six Flags plans to expand White Water's popular "Dive-In Movies" program, where films are shown on a screen to guests in the Atlanta Ocean wave pool, and add a stage at the wave pool for daytime concerts and music events. 
Six Flags Fiesta Texas (1996 – 2002).
When "Fiesta Texas" in San Antonio, Texas was bought out from Time Warner in 1996 (the current owners of Six Flags at the time), they helped flag the park into Six Flags Fiesta Texas.
"Time Warner" saw the opportunity to advertise and promote their latest movies through their Six Flags parks, so they added "The Joker's Revenge", the first "Vekoma" "Hurricane" roller coaster in the United States and the first Vekoma roller coaster to run backwards a full circuit in the "Fiesta Bay Boardwalk" section next to and along the parks quarry wall.
Joker's Revenge was painted all pink during the years in San Antonio before the coaster got too rough and had mechanical problems in 2001.
Six Flags Fiesta Texas closed down the coaster after the 2001 season and the coaster was SBNO all of 2002 until late 2002 where the coaster was moved to "Six Flags New Orleans". 
Six Flags created Fright Fest after testing Halloween-based events through the 1970s at some of its parks.
In 1989 Fright Fest was born at Six Flags Over Texas and expanded to all of its parks soon after.
The events featured haunted houses, a trick or treat trail for kids, and more.
One of the major additions was in 1999 when Six Flags licensed and opened some of their haunted houses as "Alice Cooper's Brutal Planet", featuring music from the album and using similar elements in each house.
Though Alice Cooper's name has been dropped, many of the Six Flags haunted houses still use the Brutal Planet name. 
Frontier City was opened in 1958 as a Western "town" theme-park.
It opened up at the Oklahoma State Fairgrounds, but moved to its current location a few years later to become a "boom town," since it sprung-up quickly.
The park added spinning rides, several roller coasters and a log flume ride starting in the 1960s and 1970s.
Rather than a traditional ribbon cutting, Frontier City was scheduled to have an old fashioned six shooter aimed at a piece of rope stretched across the stockade entrance.
The rope stretched across main street is still used today for the opening of the park.
Frontier City was originally owned and operated by Premier Parks.
It was the company's first and flagship park.
Premier Parks' corporate offices were located at the southeast corner of the Frontier City property until 2006 when the company's offices were moved to New York.
Premier Parks purchased Six Flags Inc. in 1998.
It was thought that Frontier City, Wild Waves/Enchanted Village, and Great Escape would eventually be re-branded as Six Flags parks, but they never were.
The other two parks sold Six Flags season passes good at all Six Flags parks except for Frontier City and White Water Bay.
The Frontier City passes were only good there and not at other Six Flags parks.
But in some years, Six Flags passes were also available for purchase at a higher price.
Six Flags corporate offices remained in Oklahoma City, but left in 2006, despite Oklahoma City's now booming economy.
On January 27, 2006, Six Flags put Frontier City and White Water Bay, Six Flags Magic Mountain, Elitch Gardens, Darien Lake, a couple of waterparks, and Wild Waves/Enchanted Village for sale.
At the same time, Six Flags also announced its plan to close corporate offices in Oklahoma City and move to New York City.
Six Flags CEO Mark Shapiro had said he expected the parks to continue operation after the sale.
But rumors surfaced that some of them could close.
On January 11, 2007, Six Flags opted to keep Magic Mountain, but then announced that it would sell Frontier City and White Water Bay, along with Elitch Gardens, Darien Lake, Splashtown (near Houston), and Wild Waves/Enchanted Village to PARC 7F-Operations.
[http://www.sixflags.com/parks/frontiercity/parkpress/saleannouncement.html] As a part of the deal, the "Six Flags" prefix was removed from the names of Elitch Gardens and Darien Lake.
Frontier City and White Water Bay were never branded as Six Flags parks.
Since the management was changed from Six Flags to PARC Management, Frontier City has been granted the largest capital investment that the park has seen in its 50 years.
The new ownership allowed for the addition of the Steel Lasso, as well as a few minor changes within the park.
On November 24, 2010, CNL announced that it had reached an agreement to terminate PARC's lease of Elitch Gardens and up to 17 other locations.
The move came after, according to their 2010 SEC filings, PARC defaulted on their lease obligations on the properties.
Five of the original six parks originally purchased from Six Flags are also involved in the lease termination.CNL Lifestyle Properties, Inc., owners of "Frontier City"; Frontier City theme park and White Water Bay water park again will be getting the Six Flags management touch when former Six Flags executives Kieran Burke and Gary Story begin managing the properties as Premier Parks, LLC.