Perfect Dark Texture Comparison
Perfect Dark for Xbox Live Arcade is not just a straight-forward port. Unlike Banjo-Kazooie and Banjo-Tooie, they've majorly improved the textures resolution. Here are some texture comparisons of Perfect Dark XBLA and the original. Obviously, the Nintendo 64 versions are on the right.
Misc Stuff (with cheese)
The only thing that's changed is the grey hair.