I had lucid dreams two nights in a row and both times they were right before waking up. I've experienced the half-awake thing too, for like a few seconds. Yesterday there was a moment when I was wondering whether I was dreaming or awake and just thinking. I think I had been dreaming and then reached the borderline. I don't know what to do about it...when you don't need any more sleep it's kind of hard to stay asleep. Sometimes I relax in my dream when I feel like I'm about to wake up and it seems like I can hold onto the dream longer, but relaxing means not doing anything so I can't enjoy the dream like that.