Counter Strike and Company of Heroes but that's kinda hard to remember.

Hmmm... Lets see:

Alot of Call of Duty 4.

Eternal Darkness.

Viewtiful Joe.

The Orange Box.

Soul Calibur 2.

Starcraft.

Starcraft: Broodwar. 

Zak & Wiki

Phoenix Wright Ace Attorney

Umm, RE: Umbrella Chronicles and Phantom Hourglass, mainly.

I don't know time, many many hours though but I'll put it this way:

Call of Duty 4 - 90%
Syphon Filter: Logans Shadow - 10% (before my PSP broke)

I had to play DS and my old GC [Melee and ToS] cause my Wii broke on a travel at February 1st and i tryed to repair it but it had no help, so i had to buy another for Brawl

Warhawk and call of duty 4, and most of march has been taken by warhawk.

1. no more heroes
2. medal of honor heroes 2
3. resident evil UC

I think No More Heroes may have spilled over into February, though I'm not sure. Played some Zack & Wiki and Guitar Hero 3, along with a little Fire Emblem. Think I also played a game of Resident Evil: UC with my brother.

I believe I was playing Final Fantasy 3 on the DS during February.

I spent a good deal of time playing Star Wars: Galactic Battlegrounds on the PC.

call of duty 4 on the ds
no more heroes
red steel