Anyone could easily say that Mike Pollock is a worthy successor to the late Deem Bristow as the voice of Dr. Eggman, (and in some cases he does an even better job), but Mike has constantly shown that he ranks up with VA's like Dan Green as one of the very few excellent's stuck with 4Kids. Mike Pollock is nothing if not prolific: he's worked as the announcer inbetween 4Kids shows, he's done numerous commercial works, and, of course, he's a pro at anime dubbing.
Pollock continuously provides realistic, believable, and properly emotional personalities to his characters; I honestly think that he can never be miscast, (even his Ella [Sonic X] was suitable). Also, like mentioned before, I think he provides an even better job at Eggman, at least *now*, than Deem Bristow would have. Deem always seemed to provide more snarl in his voice-acting than anything else, which would tend to be irritating. Mike makes Eggman sound evil like he is, but also silly like he is; think about it: is Eggman *really* the evil, threatening, "supergenius" he's supposed to be? No, he's just a nuisance who really isn't smart enough to realize his opponents weaknesses. (Mike also makes him talk more than unneccessarily snarl).
Besides, once you hear Pollock say [as Eggman]: "I'm like a bad rash: you can't get rid of me!", you love him for life.