I have to say I agree with everyone else. If I buy a sealed game, it's going to get opened the minute it comes through the door.
Actually, I did have 2 Wii games, Madworld and MotoGP (one cheap, the other a prize) which were sat on my shelf for a while. I haven't actually played either yet, but I did unwrap them.
I think it's one thing to collect games and take good care of them, but quite another to not even play them. I think it's just an extension of the whole boxed action figures thing, but even more pointless, since it's like really expensive and big picture cards.