I was thinking about this today and realized that I can't even keep up with all my current games in progress. So here's my attempt at a comprehensive list – not only to illustrate the point but also to help me take stock of the situation.
Wii Fit
Killer7 (on loan from Neal Ronaghan – thanks, man!)
World of Goo
Cubello
Mega Man 9
Super Mario RPG
Secret of Mana
Too Human (from GameFly)
Burnout Paradise
Grand Theft Auto IV
Dragon Quest IV
… and I feel like I've left something out. Coming up next week are Guitar Hero: World Tour, Castlevania: Order of Ecclesia, Crash: Mind Over Mutant (for review), Tetris Party from WiiWare, and whatever new, must-download game(s) show up. On the PC, I've still got Half-Life 2: Episode 2 that's been sitting on my hard drive for a year without being played once, and I really would like to try it sometime. I haven't quite finished Final Fantasy IV on DS, but that will probably wait for my next plane ride.
Honestly, I feel a bit better just laying it all out like this, but it's still ridiculous. Are you in the same boat? Do you have any suggestions for dealing with this deluge of gaming? Please share your tips in the Talkback thread.