I don't buy more than I can watch, though I always have 4 or more discs left unwatched at any given time, due to the sheer amount of DVDs I buy. The max I've ever had was 35 unwatched DVDs!
What is in my pile right now is:
Lupin the Third Disc 1
Lawrence of Arabia Superbit edition (fucking awesome almost 4 hr movie)
2 Utena discs
Cat Soup
Pistol Opera
Those Who Hunt Elves II vol 1
Tenamonya Voyagers
Ceres Celestial Legend Collector's Edition 1 (2 disc set)
Most of these will be watched soon to make room for a CONSTANT in-flow of DVDs. In probably 3 weeks I'll hit the 1000 DVDs mark! WOOHOO!
The best part is, when my pile is in the 2-8 DVDs unwatched I go back and watch some series I want to see again. Recent re-watches would be: Mahoromatic, Steel Angel Kurumi, Dual and InuYasha (what's out on DVD anyway).
As far as unfinished games... well, I have quite a few RPGs. I just can't be bothered to pick games up and play much anymore. Wish I could, but I just haven't been in the mood I guess. I have this severe itch to play Lunar though, so maybe I'm not as hopeless when it comes to games as I thought...