No.

When ever I am having a "good" dream, like doing something cool/fun or with hot chicks, it always changes when it starts to get good, then it sucks for a while and I wake up.
On a more related note, my brother sleep talks. When we were in Florida we had to share a room, and in the middle of the night I woke up (because he was talking) and he was like freaking out. It went something like this (he is K, I am J):
K: *Sits up frantically, panicking* Where are we? *wimpering* ...the doors...their closing in. Where are the doors? Why are they all locked? *He then looks to the right where a door was (no access though)* ...The door, where is it? They are coming we better leave.
J: Shut up and go to bed.
K: But there are no doors and we are trapped!
J: SHUT THE HELL UP!
K: *Lays back down and starts muttering to himself*
That is all, I told him later and he laughed, but it isn't the first time he has done it.
At home once I went to bed late, and our rooms are right next to each other so I have to walk past his to get to mine. And he once was standing up talking like someone from Star Trek, and I yelled at him, and he went to bed.
It is very weird, when ever I yell at him when he is sleeptalking/walking he seems to understand me and react (oddly), but remain "asleep", and he has no memories in the morning. I laugh when it happens, but luckily it has never gotten serious.