Jay Leno loves embarrassing his guests on 'The Tonight Show' by digging up old footage from their before-they-were-famous days. Usually that involves a cheesy commercial, but Leno had something else on tap to torture Matthew Morrison.

The 'Glee' star once appeared as a member of a gay boy band called "Boys R Us" in 'Marci X' -- a 2003 film starring Lisa Kudrow and Damon Wayans.

"It was the gayest thing I've ever done in my life -- literally," prefaced a horrified Morrison.