Is it possible to have a video begin playing, then pause at certain
points - with the user resuming playback with the mouse/keyboard?
So the video pauses automatically
and the user sets it running again when ready?
Yeah, you can do this in PPT 2002 and 2003.
Insert the video onto the slide (Insert/movies and sounds/movie from file).
Say yes to play automatically.
Right-click the video, choose custom animation. Add Effect/Movie
Actions/Pause. Set the pause to start "with previous." Right-click the pause
and choose Show Advanced Timeline. Drag the orange pause action thingy to
the appropriate place for the pause.
That pauses the movie, and because a trigger was applied automatically when
you opted to play the video automatically, you don't have to add it to
unpause the movie.
And crud. Now that I go back to test this again, it's not working. Grrrr!
Maybe that will give you some ideas, anyway. It may be possible to make that
work if you fiddle with it.