"trying to shake this alter ego"

It's just another day on the set of "Glee" and Lea Michele, who plays spirited songstress Rachel Berry, is in her schoolgirl attire, roaming around with a salad in hand and a female companion by her side.

Then John Stamos walks by. Michele plays it cool, greeting him casually. But as Stamos passes, the reaction that has shadowed him throughout his career reveals itself:

"Oh, my God. That's Uncle Jesse," Michele's friend says in a muffled voice.

Actually, it's John Stamos. But the character he's best known for is never too far behind.

The dark-haired star achieved heartthrob status while developing his comedy chops on the decidedly low brow "Full House," a hit sitcom that ran for eight seasons in the late '80s and early '90s — and continues its wholesome influence in syndication. Stamos has been trying to shake this alter ego ever since.