"Marge Gamer" : Seventeenth episode of the eighteenth season.
Trilogy of Error.
She was in the very first episode.
Episode 132
Episode 71 (part 2)
Season 1 Episode 19
Das Bus
Trilogy of Error.
Yes, Johnny Depp appeared in an episode of the Simpsons :)
Treehouse of Horror XBart the FinkMayored to the Mob
S14|Ep11 Barting Over
Katy Perry
Considering no one knows who Banksy is, the Simpsons can't draw him (or her) into an episode.
Wayne Rooney of 16 yrs and Cristiano ronaldo of 17 yrs
He does. He voices Alan Rickman and the Prime Minister in a 2013 episode.
Ringo was the first Beatle to appear in the Simpsons (he was the first major celebrity to appear in the series) in an episode called Brush with Greatness.Paul and Linda McCartney appeared in Lisa the Vegetarian.George appeared in Homer's Barbershop Quartet.
50 Cent has no listing for any of the Law and Order series, but he did appear in an episode of the Simpsons called 'Pranksta Rap'.
He voiced Roger in the season 22 episode "Treehouse of Horror XXI".