Ever since I was in high school, I've been able to tell myself what time I want to wake up and then wake up remarkably close to that time (usually within 5-10 minutes, and usually before the desired time). I haven't used an alarm clock in 20 years, and I've never been late to work or school.

Anybody else able to do this? Or know someone who can?

I'm still doing daily reality checks to try to elicit lucid dreams, but I'm thinking of doing some informal personal experiments to test out my ability to awaken at will at a particular time. If I do, I'll let you know what I find.