My roomate 2 years ago was nuts as well....
Here are a few of the more crazy things he did:
He would curse and swear wildly at every 3D game he played on his computer, and slam the mouse like a lunatic... then he would play a relaxing game of pacman.
Speaking of pacman, he spent half the year getting his damn computer working, a pretty good machine... And all he did with it for the first months he got it working was play one of those retro gaming packs you could run on your digital watch.
One day he was surfing the internet and he turned around and remarked that he was mad. When I asked why, he said "because all the things I want to buy off of this website are not legal to have shipped to California!" I looked over his shoulder and it was all kinds of odd weaponry!
On another occassion, he showed up in a trench coat, and said "I am happy!" and gave me a funny grin. Then he proceeded to pull open his coat and reveal a 4 foot long sword he purchased!
My next roomate was entirely different, but still strange in different reason... I sure did have some random roomies!