Many people have the 'answering machine' wake up with their alarm, do whatever is necessary to shut the alarm off, and then go back to sleep, without remembering any of it.

This is business as usual for me, but then I have a somewhat abusive relationship with my subconscious. Feeling well-rested and getting 'enough' sleep only occurs when I don't have anything sufficiently interesting to keep me up.

That being said, I have tried uberman before, and it was devastating in the short term: I felt very burnt out and constantly fatigued. However it's possible that I just wasn't doing it correctly.