I like the menu/nav bar, but reading other posts it seems like it's used a lot, and if that's the case, always go orginial, I think. Also as cool as the nav is, it doesn't really match the rest of the site, in my opinion.
I like the header/banner graphic a lot, love the colors and shaping, but I think your recent work examples below the banner/header are a bit of a dissapointment after such a beauitful header.

But overall, nice job, I do think you have talent there!