He has written for award shows like the Oscars, he's worked with countless celebrities, and you may also know him from Hollywood Squares.
Vilanch is in town for a book signing. His book is called "It Seemed Like a Bad Idea at the Time," where he shares all the horror stories from the worst shows he wrote for.
He also shared a story about Robin Williams that you may not have heard.
But we started with his shirt.
Watch the full interview in the player above.
Vilanch is having a book signing Tuesday night at OASIS in San Francisco at 7 p.m.. You can get tickets here.