Its a slider like on WMP, so, you can put the slider in any part of the movie you like. There is no Fast Forward or Rewind as such....
So, no Chipmunk noise. If you FF to a portion that isn't buffered yet, it might take a few seconds to buffer that part of the movie.
With my cable modem it doesn't take any longer than 15-20sec to buffer the new portion. I have this hooked up on my HTPC, and the
picture quality varies between movies. Maxed out was pretty good quality, but since it is a documentary, who cares. I watched THX1138,
Which was Lucas's 1st movie, and it was pretty good quality too.