Episode I Racer Glitches
This is quite a cool way to get into an out-of-bounds area in Executioner. To do it, you need to choose Mars Guo, and then choose Executioner. Play through normally, but as soon as you reach the area leading up to the second anti-gravity tube, hold down A, and go as far right as possible. If done correctly you should be racing along the wall, and if you go high enough you can even access a hidden route at the top right. If you keep on this secret route you can go beyond the second anti-gravity tube and access an area behind it! However, you won't be able to go beyond the tunnel leading out of the area and you'll throw yourself into midair, and then crash. You'll then be righted in the anti-gravity tube.