I'm not sure where I heard it, but to remember your dreams, don't move right when you wake up in the morning. And don't be woken up by an alarm clock. Just lay there, and try to remember your dreams. Without getting out of bed, think about it, and write it down.

As soon as you get up and start moving, you'll forget your dreams.

I think I'm going to start keeping a dream journal of sorts. I get some fucked up dreams, and they're usually pretty entertaining. (Guerilla warfare, serial killers, rollercoasters with mushrooms, etc.)