I remember loving this movie when I was a kid, and I just watched it for the first time in probably over a decade. It was cool in a sort of nostalgic kind of way, but most of it was just painful to watch. Bad acting and constant ridiculousness. One thing it does that pretty much no TV show or movie did at the time though, was that it's fairly accurate in its display of games. I lost count on how many times I've seen Doom or Wolfenstein with digital bleeps and bloops. I think I once saw Doom with Wolfenstein music and sound effects.
EDIT: Actually I don't even know if the kid is supposed to have autism. He acts like it, shutting himself off from the outside world and then excelling at the one thing he focuses on. But isn't Autism something you're born with? In this movie, the kid is shut off until the point where he can "say goodbye" and leave his lunchbox behind, then he seems normal. I can't believe it, Hollywood has found the cure for Autism!!
Anyway, apparently Toby Macguire makes has a small part in the movie. He's one of Lucas's crew (far left in pink):
