Question: The host of the American version of "Punchlines" hosted how many shows in his career?

Context paragraphs:
Akshay Dogra: Akshay Dogra (] ; born 21 September 1981) is an Indian actor and producer working in the television industry.  He has worked on many shows during his career, both on-screen and off-screen.  After working backstage at many shows, Akshay finally made his television debut in "12/24 Karol Bagh" on Zee TV.  He was recently seen playing the role of Akash Singh Raizada in the Hindi daily soap opera "Iss Pyaar Ko Kya Naam Doon? ".

Zara Durrani: Zara Durrani is a Pakistani-Canadian actress and model, who currently hosts and produces CHCH television series "Life & Style with Zara".  She was born and grew up in Pakistan, and later moved to Canada.  She appeared in many commercials and some films and in Neil Simon's "Barefoot in the Park".  She also models in so many fashion shows and as a host in many shows.

Bill Cullen: William Lawrence Francis Cullen (February 18, 1920 – July 7, 1990) was an American radio and television personality whose career spanned five decades.  His biggest claim to fame was as a game show host; over the course of his career, he hosted 23 shows, and earned the nickname "Dean of Game Show Hosts".  Aside from his hosting duties, he appeared as a panelist/celebrity guest on many other game shows, including regular appearances on "I've Got a Secret" and "To Tell the Truth".

Ali Safina: Muhammad Ali Safina (born 18 December 1983) is a VJ-turned Pakistani actor.  He is famous for his comedy acting and has hosted many shows rendering him a popular local hero.  He started off his career DJing at a local radio station in Glasgow, Scotland while stuyding and later on by starring in sitcoms in his homeland of Pakistan such as "Takkay Ki Ayegi Baraat" among others.  He is currently acting in a sitcom by ARY Digital and plans are for him to be cast in an upcoming movie "Jalaibee."  He is the owner of FM 96.  He and Hira Tareen became engaged on April 25, 2013.

Haft Sang (television series): Haft Sang (Persian: هفت‌سنگ‎ ‎ ; "Seven stones") is an Iranian television series by Islamic Republic of Iran Broadcasting (IRIB).  An adaptation (or as some comments shot-for-shot copy) of the American television series "Modern Family", it first began airing in 2014 one day after the beginning of Ramadan.  It is named after ""haft sang"" or "lagori", a children's game.  Each episode is around 40 to 50 minutes long, twice as long as each episode of the original American version.  20th Century Fox did not authorize the production of this series, and it is a frame-by-frame remake of the American version.  Some subplots in the American version are not present in "Haft Sang".  Sina Haghighi, a YouTube user from Iran, stated that the series therefore has a slower pace compared to the American version.

Improvised situation comedy: Improvised sitcoms are a recent television phenomenon in which there is no definite script for the actors and actresses.  Rather, the actors/actresses use the process of retroscripting in which there are rough outlines of themes and stories, but the dialogue is up for the actors/actresses to improvise.  Because of the improvised fashion, these sitcoms are usually shot by handheld camera in a documentary-type style.  Usually these shows have no laugh tracks, predetermined entrances, or punchlines.  Such improvised sitcoms include "Curb Your Enthusiasm", "Home Movies" and "Reno 911! ".  In addition to these, there are many scripted shows that will, after getting principal photography, let the actors do a couple of improv takes, and often some of the best jokes that make it on the show will come from these takes.  Notable examples of this would be the US version "The Office" or "Parks and Recreation" and the British show The Thick of it

Gene Adam: Gene Adam was the original singer of Iced Earth/Purgatory.  Adam joined Purgatory in 1985 and performed many shows with them, as well as recording several demo tapes.  In 1988, the band changed their name to Iced Earth and added Randall Shawver as a second guitarist.  Adam wrote the lyrics to "Written On The Walls", the only Iced Earth song he is noted as co-writing.  The band began working on demos in 1988 and released their first official demo tape "Enter The Realm" in 1989, followed by the self-titled Iced Earth album in 1990.  Gene continued to perform many shows with the band, notably touring Germany in early 1991 as support for Blind Guardian.

Robin Houston: Robin Houston (born 1948?)  is a British former newsreader and game show host.  He has read the news for both LWT and Thames Television and has fronted both 100% and One to Win for Channel 5 and has provided the voiceover for All Star Secrets, Bruce Forsyth's Big Night, Child's Play, Game for a Laugh, Newlyweds, the 1980s version of Play Your Cards Right, Punchlines, the Challenge TV version of Sale of the Century, Strike It Lucky, Tell the Truth, 100%, The Pyramid Game and We Love TV.

Casper Christensen: Casper Lindholm Christensen (born 22 August 1968 in Kerteminde) is a Danish comedian.  He has hosted many shows including "Casper & Mandrilaftalen", the Danish airing of "Shooting Stars" and "Don't Forget Your Toothbrush" ("Husk lige tandbørsten"), and the Danish version of "Deal or No Deal".  He also had a leading role in the Danish sit-coms "Langt fra Las Vegas" (Far Away from Las Vegas) and "Klovn" (Clown/Fool).

Punchlines: Punchlines was a comedy panel game show that aired on ITV from 3 January 1981 to 22 December 1984 and was hosted by Lennie Bennett.  The show itself was based on a failed 1979 American game show pilot of the same name hosted by Bill Cullen for which in turn was a reboot of another American game show from 1966-69 called "Eye Guess".

Supporting paragraphs: Punchlines Bill Cullen
Answer: 23