Underworld Glitch and Boba Fett underground
The Underworld glitch can be done at the level Jedi Destiny (episode VI, chapter 5). Go to the part where you are in a red room and go to the bottom left. You will fall through the floor and if you press any direction on the Control Stick, you will walk around. If you stay still, you will decend and if you jump, you will ascend. And for the Boba Fett underground glitch, you need to have bounty hunter missles. Jump and press A again. Just before you hit the ground, press Y. If you did it at the right time, you will shoot the missle as if you were still in the air and you will fall through the floor.
Added by: Glitchmaster117 Mar 7th 2008, ID#8288