I had a horrible nightmare once that was kinda like that, only the other way around sort of... I kept waking up from dreams, but I never seemed to wake up for real! It doesn't sound like much, but it was very frightening! It took me almost half a day to trust reality when I actually DID wake up. (that is, if I'm not still dreaming...
![[Eek!]](eek.gif)
)
But besides that... it happens sometimes that I do fall asleep and dream inside a dream. But never more than just one "layer" of dreaming, though.