Alan Alda, Billy Joel. Comedy bits included the "Late Night with Conan O'Brien Christmas Lighting Spectacular."
Conan talked about last night's annual lighting of the Christmas tree at Rockefeller Center and added that Late Night also has a special holiday tradition aswell. He proceeds to introduce the annual "Late Night with Conan O'Brien Christmas Lighting Spectacular."
In an elaborate parody of the real lighting of the Rockefeller Christmas tree, Conan introduces Nancy O'Dell as the co-host of his Lighting Spectacular, and then announces that they will be kicking of the holiday season by lighting a six foot tall North American Vigoda. Conan and Nancy talk about the tradition of lighting a Vigoda, a tradition that "goes back centuries." Nancy shares various facts and trivial pieces of information throughout, beginning with the average 200-year lifespan of a North American Vigoda. Conan goes on talking about the Vigoda and says that a questions many must be asking is how did they get such a big Vigoda into the studio. A video clip showing the origins of the North American Vigoda is shown. Joan and Barry Wendell, owners of the Vigoda were interviewed and shared their feelings about it being used on the show. Conan narrated the process of how they removed the Vigoda and its trip to the studio.
Conan then introduces the Holiday Special's own ice rink - declared to be the world's smallest ice rink, thanks to the show's studio size. Nancy again shares an interesting piece of trivia that there is enough ice in the rink to fill a rink twice it's size and half as deep. He then welcomes World Champion Bronze Medalists Galit Chait and Sergi Sergnofski to perform an interpretive skating routine to the tune of "Have Yourself a Merry Little Christmas," sung by Grammy-eligible artist, David Cassidy. After his holiday rendition, Conan reveals that the only reason Cassidy agreed to appear in the special is if Conan would plug his new musical, "The Rat Pack is Back!" Nancy O'Dell then puts in her own shameless plug and shares more factoids about the tradition of the lighting of the Vigoda - including that in 1802, Benjamin Franklin brought the first Vigoda to New York and that tonight's North American Vigoda is over one thousand months old. She continues spouting statistics about the Vigoda, including it's light bulb count.
The next muscial performance is of "Hark! the Herald Angels Sing" by New York's own Under-rehearsed, Reluctant Children's Choir. Nancy continues her sharing of trivial facts while Conan mentions how this lighting spectacular is being simulcast on Times Square's AstroVision screen, sounding a warning that the AstroVision screen is expensive technology and they should not waste any time on it. He then proceeds to spend the entire time laughing sinisterly. Nancy then shares another statistic that there is enough glass in the AstroVision screen to make four thousand crack pipes. The Under-rehearsed, Reluctant Children's Choir then performs a rendition of "Feliz Navidad" and Nancy chimes in with a fact about children - that it is legal to adopt them, but not legal to sell them.
A sleigh is heard in the background and Conan deduces that could only mean one thing: a visit from Triumph the Insult Comic Dog. Triumph, decked in holiday attire and driving a sled of "bitches" sings the soon-to-be holiday classic, "I Saw Mommy Humping Santa Claus" with lyrics for others to sing along. He then began humping one of his rein-dogs, another scene simulcast on the AstroVision screen in Times Square. Conan finally announces the countdown to the lighting of the Vigoda and snow falls in the studio as this timeless holiday tradition is completed.