Socom II: 

When you are playing a game, hold select, press up, up, down, up. This will give you third person night vision.

Star Wars: Knights of the Old Republic:

Easy Heal- If you are not in combat or inside a room, go to the map screen. On that screen, press x to jump back to the Ebon Hawk. All of your characters will go back up to full health, and you can press x again to jump back to where you where.

F-Zero GX:

Unlockables:

Ax Machine Parts- Beat story mode chapters on hard difficulty.

Ax Pilots- Beat all story mode chapters on Very Hard difficulty.

Ax Tracks- Win AX Machine Tracks or beat all the grand prix on Master difficulty.

Dark Schneider- Beat all chapters in Story Mode.

Master Class- Come in first place on the Ruby, Emerald and Sapphire cups on expert.

Sonic Oval-Beat the AX cup.

Mortal Combat Tournament Edition:

Characters:

Do these tasks to unlock these characters.

Drahmin- Finish One player tag team mode on Normal or higher difficulty with any character.

Hsu Hao- Finish one player arcade mode on Normal or higher difficulty.

Noob Saibot- Finish both one player arcade and tag team modes on normal or higher difficulty with every other character except Sektor. After you have done that finish one player arcade modewith Scorpion in his reaper costume on hard or higher difficulty.

Reptile- Finish one player With every character except sektor and noob saibot on Normal or higher difficulty.

Sektor- Beat tag team mode on hard without using contiues.