In anticipation of next Tuesday's release of Portal 2 (PORTAL 2 ON TUESDAY PORTAL 2 ON TUESDAY!), developer Valve has produced Lab Rat, a 2-part comic that tells the story of that dude who scribbled messages all over the walls. If you played Portal, you know who and what I'm talking about. If you haven't played Portal, then you won't care. Also, if you haven't played Portal, why haven't you played Portal?
At any rate, here are some links that are 100% clickable:
Lab Rat part one
Lab Rat part two
PORTAL 2 ON TUESDAY!!