Ever wonder what's inside that fancy console of yours? You might have noticed that consoles, like public restroom stalls at airports, all have special security screws that a Phillips or a flathead screwdriver can't back out. That's where the Console Access Pro Tool Kit comes in. It's got a set of heads to open most consoles, such as the Xbox 360, the Wii, the PlayStation 3 and all three of their progenitors, and handhelds like the DS, Game Boy and PSP. Removing tamper resistant screws will, in most cases, void your warranty and some modifications are considered illegal, but a lot of console modders have done some cool things with their gutted cases, probably the most common being to add a chip that allows a US system to play imported games from abroad.
The Console Access Pro Tool Kit sells for $20. Just don't poke around too much there, champ. You break it, you already bought it — and no warranty means no refund.