Today, by accident, I found out that when you move the mouse cursor over a QuickTime movie and scroll up/down using two fingers on the two-finger-scrolling trackpad built into the latest PowerBooks and iBooks, the movie will fluently rewind/wind.
This works in Safari and QuickTime Player on Mac OS X 10.4.2 with QuickTime 7.0.3. I haven't tested other apps or configurations.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20051019125405348