Consciousness is the topic that I think I will still remember five years from now simply because I find it the most intriguing. The different stages of sleep and how they correspond with changes in brain waves and eye movements is very interesting to me. I often find myself thinking about lucid dreaming (and wishing I could do it) as well. Hypnosis is another area of consciousness that's interesting to me because I have seen live hypnotists and I always wonder if they are phonies or not. There are also many other compelling phenomena related to consciousness that I haven't mentioned here for lack of space.