Question: In what year was "The Crash Reel" first shown?
About the article "Snowboarding", section "Films".

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Because a single film reel does not contain enough film to show an entire feature, the film is distributed on multiple reels.
To prevent having to interrupt the show when one reel ends and the next is mounted, two projectors are used in what is known as a "changeover system," after the switching mechanism that operates between the end of one reel on the first projector and the beginning of the next reel on the second projector.
The two-reel system was used almost universally for movie theaters before the advent of the single-reel system in order to be able to show feature-length films.
Although one-reel long-play systems tend to be more popular with the newer multiplexes, the two reel system is still in significant use to this day.
The projector operator operates two projectors, starting the first reel of the show on projector "A."
While this reel is being shown, the projectionist threads the second reel on projector "B.
"As the reel being shown approaches its end, the projectionist looks for cue marks at the upper-right corner of the picture.
Usually these are dots or circles, although they can also be slashes.
Some older films occasionally used squares or triangles, and sometimes positioned the cues in the middle of the right edge of the picture.
The first cue appears twelve feet (3.7 m) before the end of the program on the reel, equivalent to eight seconds at 24 frames/sec.
This cue signals the projectionist to start the motor of the projector containing the next reel.
After another ten and a half feet (3.2 m) of film is shown (seven seconds at 24 frames/sec), the changeover cue should appear, which signals the projectionist to actually make the changeover.
When this second cue appears, the projectionist has one and a half feet (457 mm), or one second at 24 frame/s, to make the changeover.
If it doesn't occur within one second, the tail leader of the reel coming to an end will be projected on the screen.
Twelve feet before the "first frame of action," Academy leaders have a "START" frame.
The projectionist positions the "START" in the gate of the projector.
When the first cue is seen, the motor of the starting projector is started.
Seven seconds later the end of the leader and start of program material on the new reel should just reach the gate of the projector when the changeover cue is seen.
On some projectors, the operator would be alerted to the time for a change by a bell that operated when the feed reel rotation exceeded a certain speed (the feed reel rotates faster as the film is exhausted), or based on the diameter of the remaining film (Premier Changeover Indicator Pat.
No.
411992), although many projectors do not have such an auditory system.
During the actual operation of a changeover, the two projectors use an interconnected electrical control connected to the changeover button so that as soon as the button is pressed, the changeover douser on the outgoing projector is closed in sync with the changeover douser on the incoming projector opening.
If done properly, a changeover should be virtually unnoticeable to an audience.
In older theaters, there may be manually operated, sliding covers in front of the projection booth's windows.
A changeover with this system is often clearly visible as a wipe on the screen.
Once the changeover has been made, the projectionist unloads the full takeup reel from projector "A," moves the now-empty reel (that used to hold the film just unloaded) from the feed spindle to the takeup spindle, and loads reel #3 of the presentation on projector "A."
When reel 2 on projector "B" is finished, the changeover switches the live show from projector "B" back to projector "A," and so on for the rest of the show.
When the projectionist removes a finished reel from the projector it is "tails out," and needs to be rewound before the next show.
The projectionist usually uses a separate rewind machine and a spare empty reel, and rewinds the film so it is "head out," ready to project again for the next show. 
Films at the time were no longer than one reel, although some multi-reel films had been made on the life of Christ in the first few years of cinema.
The first feature length multi-reel film in the world was the 1906 Australian production called "The Story of the Kelly Gang".
It traced the life of the legendary infamous outlaw and bushranger Ned Kelly (1855–1880) and ran for more than an hour with a reel length of approximately 4,000 feet (1,200 m).
It was first shown at the Athenaeum Hall in Collins Street, Melbourne, Australia on 26 December 1906 and in the UK in January 1908. 
 The Movietone sound system, developed by Fox Film Corporation (later 20th Century Fox) was first demonstrated to the public, at the Sam H. Harris Theatre in New York City.
Shown by a movie projector equipped to play sound-on-film, the one-reel film preceded the feature presentation, "What Price Glory?".
Though not quite synchronized, the film included the sight and sound of popular singer Raquel Meller.  
Reel to Reel is the debut album by American rapper Grand Puba.
It was Puba's first solo venture, following group projects with the likes of the short lived group Masters of Ceremony and Brand Nubian.
Both of the group’s albums were critically acclaimed but failed to duplicate that success in terms of album sales.
The album was largely produced by Puba himself, with help from the Stimulated Dummies, Kid Capri and others.
"Reel to Reel" includes the number one Rap hit "360 Degrees (What Goes Around)", as well as the singles "Check it Out" (featuring a young Mary J. Blige), and "Ya Know How it Goes."
The film has three versions.
A two-reel black-and-white version lasting approximately 20 minutes, a three-reel black-and-white version lasting approximately 30 minutes, and a three-reel colourised version.
There is also a "feature" version joining this film and Be Big!, by a title card stating that Laurel & Hardy were divorced by their wives for what happened and wind up in the dingy rooming house.
The two-reel version and the first two reels of the three-reel version are identical except that the two-reel version ends with the landlord committing suicide when, due to his residence being quarantined, he finds he is unable to evict Stan and Ollie.
In the three-reel version, Stan receives a telegram just before they are evicted that says he is to inherit a vast fortune, but only if he leaves Ollie behind forever.
This version was rediscovered in 1985.