Thanks everyone.

I appoligize for the relative smallness of friday's pack. Fortunatelly I was inspired this weekend and managed to get about 70 done on the weekend (three mini levels, three full levels, and a few odds and ends). I hope to have a little over a hundred total for next friday. To give you an idea of where I'm at, I've started the second floor of the castle (the part that requires 30 stars and a key to get in). Rejoice! Finishing every level of the game is a very real thing! Once all the environment textures will be finished, there will only be the UI textures, character textures, and skyboxes/backgrounds. I haven't decided yet if I should do them, or just point towards somebody else's back. I may only do the backgrounds, as well, as there already exists an excellent UI pack.
Upgrading these textures is a fun excersize for me. The textures I'm creating at work for our next game are great but aren't really cartoony, and I prefer the detailed (non cel shaded) cartoony kind.
Kolano: I don't really agree, as you've got a lot of different styles. A painted style texture would not go well with a realistic or toon-shaded style texture, even if they are all excellent.
Poobah/TerraFrost: Kamran's bowser puzzle textures (and others) is indeed outstanding. It blows my puzzle texture away in terms of quality and sharpness. However it's a question of style. I'm using a painty slightly gritty feel, so an ultra sharp texture might be a little out of place. You're free to merge his textures into my pack in your plugin folder, but I'd rather keep the integrity of my release, at least for now.