The name of the movie is "Waking Life". It is done in a strange style where real life motion picture is "cartoonized" which is the best way I can explain it.
It mentioned the unreadable numbers on the clock thing.
I'd recommend it to any dream philosopher for sure.
Reaching lucidity gives me a somewhat dizzy feeling and a ringing in my ears.
I really can't do it anymore, because I fear the consequences. I played with it for a while and really ended up freaking myself out. A feeling like if I don't snap out of it right away and wake up, I'll die.
I remember while experimenting with it thinking I may have tapped into some unknown power, but then I thought I was causing myself to have flashbacks. So I quit.