Season 1: Episode 13: Jimmy's Jimmy
Jimmy's best friend, Billy, comes to Los Angeles in hopes of becoming a star. But since Jimmy doesn't have a place of his own for Billy, he instead asks Greg to let his friend pitch a tent in the backyard. Greg, annoyed at having houseguests who have houseguests, makes no secret of the fact that he thinks Billy's dream of acting is a waste of time. Greg later gets jealous after finding out that Jimmy is taking Billy to a hockey game when he had previously offered that extra ticket to Greg. Trying to make up with Greg, Jimmy manages to get a third ticket so the three of them can go, but Greg continues to feel left out when Jimmy and Billy have seats next to each other, and he has to sit alone. Greg feels better after hearing from Jimmy that he's tired of Billy after spending so much time with him. Then both of them are stunned when Billy blows them off after his very first audition lands him a starring role on CBS' The District.