Yes ... Hollywood is the land of the megastar. You know, those instantly recognizable celebrities like Tom Cruise and Angelina Jolie. But it also plays host to the "That Guy" -- actors who have found a way to consistently work, but somehow always stay just beyond the limelight.
TMZ caught up with the ultimate Hollywood "That Guy" actor, Stephen Tobolowsky, who among dozens of other roles, played insurance salesman Ned Ryerson in 'Groundhog Day.'
Tobolowsky has been acting in Hollywood for 30 years and has an impressive resume that includes more than 170 movies and television shows.
TMZ sat down with the actor, who takes us behind-the-scenes and shares some secrets about the greats he's worked with. From why Al Pacino has to dress incognito, to what Bill Murray is really like on set, to who told Winona Ryder about the birds and the bees - he's seen it all.
You can see more stories from Stephen in "Stephen Tobolowsky's Birthday Party" at STBPmovie.com, due out Tuesday.