I've never had the teeth falling out one, but I've had some real doozies. When I was younger, I was always having to save my brother from snakes (I'm not a fan of snakes). The weirdest dream was a flying snake took him and I couldn't catch him. Another childhood dream was when a zeppelin shot me with a machine gun.
Now days it depends on what is going on in my life. I have the "evil twin" husband one sometimes and, if I'm not mad at him all day, I'm certainly a bit stand-offish. I have cried so hard my chest hurt in dreams before. These usually involve my brother or sister. I think the one that irritates me the most is when I've had trouble figuring out how to fix a problem at work and I will write code over and over in my dream and never get any closer to getting it fixed. Luckily that one hasn't happened in a while.
I will have the same dream over and over and once I realize it's one I've had before, I'll change it (is that possible?) to be more to my liking. I don't have sex dreams too often, but they are the most fun.