He’s done a pretty amazing job of making the shift from bit player/child actor in numerous movies and sitcoms during the Eighties (Mr. Belvedere, Wonder Years, My Stepmother is an Alien) to what he does now: voices on Family Guy, co-creator of Robot Chicken and star in various comedies. Personally, I think his breakout moment was playing Dr. Evil’s son in the first Austin Powers movie. Good thing he was able to push forward into the better things he does now, Mike Myers won a slew of Razzies for his last flick.
I have a feeling Seth is going to be factor in show business in one aspect or another until he retires in another 30 years.