I have far too much junk cluttering up my apartment, and certainly a lot more than I want to move with me to Washington. Here's the thing, though... people are actually coming to my front door and taking this stuff off my hands for me. Tonight I gave away an old NES (I had two) and some RAM that I couldn't use.
If you haven't heard of freecycling, I'd highly recommend it. Go to freecycle.org and find a local group for your area. People advertise what they have and what they want in mailing list, then make arrangements for pick up.
Some of the requests can be fairly inane: "I want a laptop computer!" and "Who wants to give me their car?" are actually quite common. I'm not sure why the moderators don't just block the messages.
Similarly, so are some of the offers: "I've got a coupon for 20% at Bed Bath and Beyond!" was one a while ago. Oh, you mean the coupon they mailed to everyone in Madison, including me? Yeah, we'll pass. But thanks.
I'm thinking I should start clearing the crap out of my storage space with freecycling. It seems to be the place that my things go to die... once something goes down there, the odds that I'll ever want it again shrink to close to zero.