Skyrye7, I like all these threads you're starting up. I'm subscribing to this one as well. It's nice to see basic opinions from everyone.
SDguy, I suppose maybe he's just fishing for suggestions for any situation, regardless of tank size or resources. Fishing. Lol.
I've really only owned 4 fish in my 7 years in the hobby, but I'd say the calmest, easiest citizen would be a Green Clown Goby I had a long while back. Borderline timid, though.