I just found this out, thanks to this handy blog post, I'm just re-posting it here for future reference.
Check this out, you can skip directly to a specific portion of a youtube clip. Test it out with the clip below, when you hit play should jump directly to 3:56 into the video.
How did I do it? Well...take your everyday YouTube embed code and add "&start=20" behind a couple portions of code (see text box below). Replace "20" with the number of seconds into the clip that you want to jump to, so in the clip below I went to 3:56 Into the clip, that's 236 seconds.
.