I just finished Bioshock. I played through Portal one more time. I spent a full hour tonight trying to get System Shock 2 to work, without success. I accidentally uninstalled the Call of Duty demo before finishing it and didn't have time to wait for it to download. Lacking any other immediate and available options to get my quick gaming fix, I turned to an old drug: UT2004.
I had been sober since August, but I went back. It was all there, just as I remembered: The three-second load times. The silky-smooth framerates. The rap-heavy background playlist. And the absolute domination of opponents. It's just like riding a bicycle.
I could use Mass Effect or Assassin's Creed right about now.