I use Wiiflow WFL and I followed a tutorial to fix Wiiflow from kicking me to the system menu after starting. Then, I booted up Pikmin 2. It works and there have been no problems.
I then tried Super Mario Galaxy with the same settings as Pikmin 2 and I was kicked to the sys menu. I'm booting...
I've been playing Killer Clowns from Outer Space all day, is pretty fun. Basically Friday 13th but with clowns. One of my favorite b rated movies from way back.