In this list of the best pop star cameos on 'The Simpsons,' we're highlighting hilarious cartoon versions of Justin Timberlake, Katy Perry, Lady Gaga plus others who have appeared onscreen with Homer, Marge, Bart, Lisa and Maggie.

Since debuting in Dec. 1989, 'The Simpsons' has racked up 24 seasons and 510 episodes. With a cult following, holiday-based episodes (Hello! 'Treehouse of Horror' is always so epic), and a feature film under its belt, it's no wonder 'The Simpsons' is the place to go if you've ever wanted to achieve your life long dream of being a cartoon character.

Like we said, numerous famous people have visited the town of Springfield over the years, and we've compiled a list of what we think are the best pop star cameos on 'The Simpsons.' Just click the button below to scurry on to see the list. No really. Click it. D'oh!