My first roommate was Joe. We got along fine, despite that he was Catholic and a jock (football player); he was reasonably intelligent and easy-going, though didn't take crap from anyone. He would get absolutely wasted every weekend, but he did it outside of our room, so I didn't care.
My second roommate was Rob, who introduced me to some future roommates (we all got an apartment together junior and senior year of college). He's a nice guy to a fault, and was good to have around because he'd actually clean. Other people I lived with (most went abroad at some point and switched out, which is why there's so many): Andrew, Dean, Ben, Steve, and Patrick. I got along with all of them except Patrick, and we still keep in touch and meet up occasionally. Patrick was ok until he stayed with us to replace someone who went abroad, when we discovered he was a completely self-absorbed jackass. He did crap like turn the heat up to 90 in the winter and complain endlessly when people didn't bow to his every whim.
My current roommate at law school is Will. He's a nice guy, though we both generally keep to ourselves and have our own separate groups of friends.
I've had a lot of roommates, and only had a problem with one rather extreme case. I'm pretty very laid back offline and it takes a lot to actually bother me, so I can generally get along with anyone.
Also, we didn't have RA room inspections in my freshmen dorms (except during breaks when we weren't there anyway).