Elvis Costello and Sean Penn
In the Season 2 premiere titled “Back Off Mary Poppins,” the Grammy Award winner and Academy Award winner played themselves as part of Charlie’s monthly guys’ support group. In this episode, Alan gets jealous and wants to join the exclusive guys club. Charlie won’t let him, and Alan tries to get in touch with them on his own. One of his ex’s turned the guys against him. Eventually, they let him into the group, but Alan annoys everyone too much, and they tied him to the streetlamp. Sean Penn delivers the winning line that ended up being the title of the episode.
Source: eonline
Penn won the two Academy Awards for his roles in ‘Mystic River’ and ‘Milk.’ He began his acting career in TV, with a brief appearance in ‘Little House on the Prairie’, directed by his father, Leo Penn. Penn’s net worth is approximately $150 Million dollars.