I used to have nightmares about being drug/tossed around my bedroom at night by some invisible force. They were realistic enough that, on waking, I half-believed it had actually happened. (Had that one come back recently - I think it was stress.)
And then there were recurring dreams/nightmares about a plane crashing into the mountain behind our house and starting a fire. (I also had recurring nightmares about developers encroaching on our neighborhood. The fence was always in the same place in those dreams, right along the ridge through the woods out back. Oddly enough, I mentioned them to my mother a few years back and she'd had similar dreams, down to the placement of the fence.)
Speaking of fire, I recall one nasty one where the house was on fire, my father was sitting in a recliner being engulfed by flames, and I was trying to put it out by carrying water in a glass from the kitchen because nobody else in the family would listen to me.
I also had nightmares about escaping the school bus. I'd want to walk home from school, but couldn't get away from the bus. (Yeah, I know - most people have nightmares about missing the school bus. I had nightmares about getting away from the danged thing.)
Also had several involving large spiders - like hand-sized and up.
Had a fairly vivid one about being lost in a haunted house once - sort of like Monster House, only decades before the movie.
And another one where, somehow, our family had fallen forward in time and everything was overgrown and rotten and rusted; that one ended when we were trying to leave the house in the old car, rolling down the hill toward a huge patch of stickers, and the engine wouldn't start and the brakes were out.
And, of course, the going to school in PJs/underwear dream (but if you didn't look down, nobody would notice.) In more recent years, it's been replaced with the dream where I'm back in school, but can't remember my class schedule. I'm even somewhat aware of the fact that I graduated and shouldn't be there...