This obviously doesn't reflect the quality of the game and is an entirely personal opinion.
1 - Borderlands (I still don't get why everyone harps on so much about this game. After 20 hours of fetch-quests, shooting the same generic bad-guy for every single bloody one, I couldn't handle life any more.)
2 - Evony (I've never played it, but I had to add it for all the poor souls who were expecting bosoms aplenty.)
3 - Minecraft (I guess it's fun for those who are really into it, but I don't think building a big-ass fort warrants 100 hours of my life.)
4 - Final Fantasy (Not my cup of tea. Tried a few of them as they came out due to the orgasm-level hype and was just underwhelmed. That being said, I never quite got into the lore so it's probably much more exciting for someone who knows all about FF. The tactics game are brilliant, though.)
5 - Skyrim (I have to add this even if I loved it, because of all those *go into dungeon lol duararugh everywhar* missions that seemed to make up most of the game. I wouldn't have been mad if this wasn't the game for which I was waiting.)