God, bans in counterstrike count? I still play 1.6... You get banned for PLAYING 1.6, it's just what happens. Some of the funny bans in my time:
I was banned from a local gaming store because we wouldn't buy any cards from the cockwit owner, but we were totally buying him out of all his snacks so I don't know why his vagina had so much sand in it.
I was temp banned from wow because a few of my mates and I got absolutely pissed and started a 'burning baby pit' in ironforge, featuring the likes of 'Handlebars' the gnome mage, and 'Mustachio' the gnome warlock with a porn stache. Yeah, just a bunch of naked gnomes in a brazier, but apparently it got quite a few people pissy.
I was temp banned from wow for having someone call me a hermaphrodite once! No, it was great. He called me a 'hermafrodaite' and I simply corrected the spelling, and apparently got a three day out of it. Some world, eh? He didn't get a thing because I apparently provoked him by not arguing with him about whether Paladins were overpowered at the time. (This was before they rapinated the ret tree)
I was 'permanently' banned from a local Wal-Mart for riding the scooters and jousting in the bike aisle. They can't really enforce that one, and I still go there on occasion just to feel rebellious.
I will by the end of this month be banned from my dorm because I owe the university 4000 american dollars in unpaid dues and debts. Funny story there, too. Remember kids, don't go to school if you aren't homeless, rich, or have some manner of scholarship.