In Surely You're Joking..., there's a great story about Richard Feynman's experiences with lucid dreaming (though I'm not sure he uses that phrase). It's what

In Surely You're Joking..., there's a great story about Richard Feynman's experiences with lucid dreaming (though I'm not sure he uses that phrase). It's what inspired me to try. Got it to work twice. Both experiences were during afternoon catnaps, for some reason.