I finally completed Episode 2, and i have to say, that the plot of Half Life is getting even darker and mor intriguing than i had imagened. I cant wait until (IF) Episode 3 comes out.
PS: For those of you who dont know what Half Life is ask anyone on this website, or go here
http://www.gamespot.com/pc/action/halflife2/index.html?tag=result;img;0