Just completed Portal
Yes, I know. I got on the bandwagon a bit late. Installed and finished playing in two days. Best part is; I downloaded the game for free (legally of course). Valve had a free copy of the game listed for about a week. The game was very easy to complete and very interesting to play. I enjoyed the puns and humor of GLaDOS. I was surprised when the final video began playing and I was able to see the cake she had been talking about all this time. Well done Valve!