Started my day with a bang: what woke me was a dream about having to dispose of a hand grenade in a hurry, from inside a house with a floor plan like mine but everything else about it looking like it was from around 120 years later[*].
I woke up shortly after the very expensive explosion, while dream-me was trying to figure out whether I had made the right decision. (When the thought exercise expanded to, "was my escaping injury at that distance plausible in real life," that woke me up.) The earlier parts of the dream had already started to fade -- enough so that I remember somebody handing me the grenade with a panicked look on his face, but I don't remember how there happened to be a grenade in the house in the first place, how it got activated, or whose house it was.
But the vivid image of many, many square meters of thick glass crashing down, and steel parts of the building facade bending inward ... remains vivid. Weird way to start my day.
(BTW, waking up after far too little seep because a dream got weird and I started trying to figure out the logic of it while I was still dreaming, happens to me a lot. But almost always without any explosions.)
[*] That is to say that it looked like a late XXth Century design.