wow, it's really a great piece of hardware. here's some pro's and con's.
~ excellent for SNES games
~ nicely built (feels strong, not cheap like nunchuck)
~ 2 analog sticks, much more accurate for N64
~ 2 different Z button positions (N64)
~ plug's into the bottom of the wii-remote (not USB)
~ you can control the total system OS with it (navigate through all menus)
~ Z button is strangely positioned, hard to press.
~ L + R buttons need extra pressure to be recognized
overall, it gets a 8.9/10