Colin Hanks has quite a gift for light comedy (he'll probably hate me for this comparison, but it's the same touch Tom had in stuff like Splash and Big) and I'd love to see him in something more dramatic.
He was one of the best things in ROswell, IMHO, which was spoiled by the terrible acting of Shiri Appleby and Jason Behr. I think his last name has done him more harm then good; Hollywood is full of tall poppy symdrome. I mean, no matter how succuessful 24 is, Kiefer Sutherland is still Donald's son. But I really hope he gets some decent to do in the future, because his talent is just going to waste.