No.
Harry Shearer plays Ned Flanders, Rev. Lovejoy, Principal Skinner and scratchy the mouse among many others on the Simpsons. He is probably best known (at least with a cult following) as Derick Smalls in "This Is Spinal Tap". Hope that helps...
Denis Leary appears in an episode of The Simpsons notFamily Guy
See related link below to information regarding the voice actors in "Total Drama Island" .
I doubt if you would find jappenes naruto voice actors in America but it might be possible to find Liam'O'brian ( voice of gaara) in holly-wood or anywhere else in America.
The voice of Milhouse van houten from The Simpsons is played by Pamela Hayden.
Dan is the voice of the very popular voice of the simpsons Homer, Abe and many other simpsons characters.
No , they are far from well off with many finding it difficult to find steady work and they have to resort to selling their autographs at anime conventions . Some do make a living wage at it such as the voice actors for The Simpsons .
Kelsey Grammer
No.
They're professional voice actors, although some of the characters' voices have changed over time, Homer, Wiggum & Moe for example, so they aren't the same as when they started.
The voice of the character Marge Simpson on the TV show The Simpsons is done by Julie Kavner.
Dan Castellaneta plays the voice of Krusty the clown.
I think its Michelle Pfeiffer.
Fahim Zaman. He is also the voice of chad from simpsons and the voice of Bop from Team Umi Zoomi
No. Not as a character nor a voice actor.
The creator is Matt Growning and he doesn't do Homers voice. The voice of Homer is Dan Castellaneta.