I'll start with the obvious "Bill Murray?!!! You're Bill Murray?...yeah...but let's just keep that between us" Coffee and Cigarettes <iframe width="560" height="315" src="//www.youtube.com/embed/H6EZkIaJcCI" frameborder="0" allowfullscreen></iframe>
Pulp Fiction - Christopher Walken and the story about the watch. Annie Hall - Marshall McLuhan speaks to Woody Allen.
I was gonna say Bill Murray in Wild Things. Not really a cameo but I did not expect to see him in that movie.
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I was about to post this! My wife didn't even realize it was Cruise until I told her. He was great in it.
TV: Sammy Davis Jr. on All in the Family George Clooney on South Park Michael Jackson on the Simpsons Richard Pryor on SNL The Cylon on The A-Team (if you are younger than 30 or not BSG fan... Richard Burton on The Fall Guy Raquel Welch on Mork & Mindy Ann Margret, Tony Curtis on The Flintstones (up until a few years ago, I didn't realize they voiced their Bedrock versions) Movie: Martin Scorsese in Taxi Driver ... possibly one of his greatest ever. Ray Charles, Aretha Franklin in Blues Brothers Gene Hackman in Young Frankenstein The 3 Stooges in It's A Mad, Mad, Mad, Mad World Any old time toon in Who Framed Roger Rabbit Alec Baldwin in Glengarry Glen Ross Don Ameche and Ralph Bellamy in Trading Places Buster Keaton in Sunset Blvd.