There's not a fortune to be made doing voiceover work unless you're one of the main voices on The Simpsons. See, there's The Simpsons, and then there's everything else.
Never met Levinson. Ever. He directed those American Express spots for us for Seinfeld, and I was off on some guest spot that I didn't even want to do... and I got talked into doing it.
I'll work with Jerry Seinfeld any day of the week. Get a nice little paycheck there, but you do it for free. It's just good to be associated with that man. He's a great guy.
You don't make a fortune doing cartoons. It's a lot of fun, it keeps you busy, and it's better than a kick in the pants, absolutely. But doing voiceover work doesn't make you rich. It just doesn't.