Depends whether he attacks from the left of me (my window) or the right (my door). Immediate response smash this laptop on to his head and snatch up the folding knife on my desk I use for eating kiwi fruits. Next move if he's attacking from the left run to my bed and grab the crowbar underneath (long story) and go to town.
Attacking from the right is harder. Wii balance board to the head to try to stun him, followed up by the wii and then the 360 (hopefully a last resort). Neither of these work throw life size plastic skeleton (named "Charlie") at him to try and tangle him. Depending on how tangled leap onto couch and then over him to get the crowbar. If not tangled enough push 42inch tv on him (sob) before bludgeoning with thermos or stabbing in eye or retrieving crowbar.
I think I'll most likely survive, as I have plenty of stuff in my room both in weapons (crowbar and combat knife) if I can reach them, and the other above mentioned stuff. My only worry is being bitten as I'm only wearing boxer shirts and a ripped t-shirt. Also I assumed zombie scenario.