First lucid dream ever, just now. It wasn't a great dream, but it was a huge landmark for me. It wasn't lucid in the sense that I realized "oh look, I'm dreaming, let me start doing impossible things now" so much as "either I can let this continue, or I can stop now by choosing to stop dreaming." But there was a realization nonetheless that it wasn't real.
I don't remember exactly how it started, but the first thing I remember was being with Melody. I was giving her a very particular look, and kissing her in an unusual way. Then it cut to later, when I was in more or less the same situation, only I could now do more than just kiss; thanks to some kind of "sex mods" I had installed in myself online. I think I had an understanding of this at the time, but I didn't see the actual control panel or whatever until later on. They gave me the ability to do virtually anything sexual, of any intensity or level of appropriateness. But when the time came to use the second batch of them, I realized it wasn't time yet and thought it through. I seriously thought about it, with Melody looking at me in confusion, but I confused her even more by deciding to wake up rather than disrespect her by using them early. Then I had a couple of flashes of the online control panel and briefly saw the names (one of them, I think, was called "KissMod v1.something," which is ridiculous). Then I was outside the store where I'd bought the system, and it looked really, really seedy. There was no one inside, and the inside was really dark even though it was bright outside and there were big windows. There were two buildings, apparently related, though I was only interested in one of them. They were both closed, and I guess after I looked around the outside of the one I was concerned with, I decided I was done investigating and woke up just under two minutes before my alarm went off.
Which all was awesome, because for the first time ever I actually consciously chose to end or otherwise manipulate a dream, and even though the dream was more or less all about immoral behavior, I still chose to end it.