You're right... I have a pretty big collection... but do I play any of them... barely... probably because of time, the fact that I'm overloaded by choice, et, etc...
Xboxes can be had for as little as £10 - if you mod them (which, on the whole, isn't a tricky thing to do!), you can make them into incredibly machines. The Xbox is definitely my fav machine ever based on it's incredibly versatility! I have 5 of them on my last count!?!
1x unmodded - used for 'collective' purposes...
3x 200gb-500gb Media Center Xboxes - awesome for streaming stuff around the house.
1x hacked to pieces Xbox - the one being used for this project!