I have an awesome idea for a console add-on. I'm watching Pete play Mass Effect and Assassin's Creed and they both have a lot of information to remember. Mass Effect, in particular, is very good at keeping everything organized for you and making sure that you can access more information than you could ever possibly need. Nonetheless, sometimes it's hard to remember "I checked this unmarked room already" or "I need to come back and ask this person these same stupid questions when I have more charm or intimidation." I really liked being able to make notes all over my maps playing Zelda on the DS; it was most helpful. I think that they ought to make a wireless "notepad" for the Xbox - something the size of that e-book reader Amazon is hawking. It would have a touch screen and a stylus (pen-length, please, for adult-sized hands) and could interface with the information provided by the game and allow you to make your own notes and associations.
For example, in Mass Effect you could open your journal on your TV screen and the map on your notebook and mark a big ol' unsmiley face for a lock you failed to finesse and will need to open with "omnigel" (or whatever it's called) when you have more of it (if you ever don't have enough). Or if you thought to yourself, "I'd like to give my friend Big Monster-Looking Guy some better armor, but I'll need to level up his Armor Wearing Skills; I hope I don't forget," you could open the buddy screen on your notebook and write "Needs better armor" over Big Monster-Looking Guy as a reminder. If you have trouble remembering where you're going, you could create little linking icons between the map and the journal entries the game so helpfully provides.
I think this would be even more helpful in games that don't provide Mass Effect-levels of information. It would create a whole new world for gaming guides and down-loadable content. You know how in those "Official Game Guide" books they sell for $20 at game/electronics stores they have specialty maps of where all the flags/keys/MacGuffins can be found throughout the game? Imagine if you could download those from the Tubes and X out each one as you collect it. For OCD gamers (like me) or completionists, that would be pretty neato.
Anyway, these are the things I think about while watching Pete play games. Well, this and, "I wonder if my brother would let me borrow his Xbox to play some Katamari."