Here's a list I've compiled.
Bowser castle-A)go into the room with the spinning floor. Exit out the back. Turn around, and boost. You will hit the roof B)Go to the part right before the spinning bridge. go diagonal, and then (go very slowly)right when you fall off, hit the B button. If done right, you should hang there C)Go into the spinny floor room. Go against the right wall, and drive to the wall. You should kind of do a whelie. D)Start at the beginning. Take two turns to the left. When you are going up the second stairs, hug the left wall. If you use a mushroom and jump, you can clear the wall!!!
Sky Garden-go to the place right before where there is an item box in the air. There should be a little brown ramp to the right. Drive to the back of it. Face it at a 45oangle. Jump. You should be doing a noseslide. B)If you spin on the ramps, it will make a funny noise.
Bowser castle 2-Go about halfway through the course, past all of the little rainbow jumps. Go to the last one. Drive onto the last half sideways. You should do something cool.
Luigi mansion-A)go onto the stairs, and hold A+B, and do a turn. Freezes the game. B)go onto the stairs, and turn around. If you use your mushroom at the right place, you will jump off the bump on the left side, and go through the top of the fence.
Tick tock clock-go backwards, and go on the backwards spinning gear. Drive to the very left, and let the gear carry you backwards. It will let you go below the level.
Wario stadium-On the double jump part, run over the bottom boost. Jump. Tap left or right. When you land on the top rainbow boost, tap jump again. You will spin halfway around.
Luigi circuit(gcn)-Somehow, if you turn around and use your mushroom, you can jump the wall and go onto a neverending road. I haven't done this one yet, but oh well.
Choco island 2-go over the bumps very slowly. big speed boost. You can't go over them backward.
Mario Circuit-this isn't a glitch, but I think it deserves mention. IF you hit a goomba with a green shell, a mushroom will pop out. Doesn't work on wifi
General-try going over a rainbow boost backwards. Or a jump.
Shy guy ghost-I ran a time trial as shy guy, and then forgot to hold select while it was saving, and it said I was donkey kong in the egg. The weird thing is, when I got halfway through the course, it ran into a wall, and started to race backwards :S :S :S
Online glitches-One time A boo came down to steal my item, and just stopped on my kart for about 2 seconds. It then just left. odd.
« Last edited by .hack on Oct 7th 2006 »