REGGIE! (http://rvlution.net/reggie/)
That's right, the New Super Mario Bros. Wii level editor has finally been released. There's a slight issue in that not everything shows up rendered (3D models) so making maps with this might require some effort. This isn't really a request, per se, but I just thought I'd throw out this info in case anyone was interested in taking it up at some point.
That is nuts. Already pro hacking stuff for the Wii. Well I guess the Wii isn't really that young.