Ack. Really, 2 days ago when I removed the FFXIV beta. I went through and removed all my old games. Or else I would of been tempted to take a looky.
I removed War, LotRO, my test copy version of EQ2, Istaria, D&D Stormreach, Aion, and Fallen Earth. I kept EQ2 live servers and EvE. I ended up with 300 gigs free instead of the 20 gigs free I had before removing all the games both MMO and not.
So I did a bold thing. I re-sized my existing partition, and created a new one! I now have a place to just install games. So I should be able to frequently defrag it with out it taking over night to do it.