Lucid dreams are pretty cool. I would describe it as the ultimate video game. You can do whatever you want.

I've had lucid dreams about being in the diablo world and fighting like the characters do, I've had lucid dreams about The Matrix, I've had all kinds of lucid dreams. I don't really do it anymore though, unless it's accidental. It's too much of a production to actually induce them, and my girlfriend would probably think I was doing some sort of weird meditation. She doesn't know anything about lucid dreaming.