Billy Crystal and Robin Williams. (Photo: Archive)
Kathleen Turner. (Photo: Archive)
Hank Azaria and Paul Rudd. (Photo: Archive)
Jason Alexander. (Photo: Archive)
David Arquette. (Photo: Archive)
Brad Pitt. (Photo: Archive)
Christina Applegate. (Photo: Archive)
Jon Lovitz. (Photo: Archive)
Jeff Goldblum. (Photo: Archive)
Susan Sarandon. (Photo: Archive)
Denise Richards. (Photo: Archive)
Anna Faris. (Photo: Archive)
Selma Blair. (Photo: Archive)
Alec Baldwin. (Photo: Archive)
Rebecca Romijn. (Photo: Archive)
Brooke Shields. (Photo: Archive)
John Stamos. (Photo: Archive)
Isabella Rossellini. (Photo: Archive)
Morgan Fairchild and Jay Leno. (Photo: Archive)
Bruce Willis. (Photo: Archive)
Gabrielle Union. (Photo: Archive)
Jill Goodacre. (Photo: Archive)
George Clooney and Noah Wyle. (Photo: Archive)
Jim Rash. (Photo: Archive)
Kristin Davis. (Photo: Archive)
Danny DeVito. (Photo: Archive)
Charlie Sheen. (Photo: Archive)
Winona Ryder. (Photo: Archive)
Sean Penn. (Photo: Archive)
Julia Roberts. (Photo: Archive)
Greg Kinnear and Aisha Tyler. (Photo: Archive)
Helen Hunt. (Photo: Archive)
Marlo Thomas. (Photo: Archive)
Hugh Laurie. (Photo: Archive)
Over the years we saw many famous faces guest starring on Friends, but every time we rewatch the iconic 90s sitcom, we remember many more surprising celebrity cameos. Here are 40 of the best ones!
