Can someone point me to where I can download a video of a pro golf
swing?  I'd like the back and side view for both a driver and an iron
for a top level golfer, like Els, or Woods.

This is by far the best site out there for golf swing sequence. This
gives you the  front and side view of almost all the pros on tour.

You will need to register to access these swings. 

http://www.golfdigest.com/instruction/swingsequences/

I hope this helps.

Yes, that helps much.  Thanks.  I couldn't figure out how to download
the quicktime files, but I can get the animated gifs on my computer,
which is almost as good.

Thanks!

Thomas

Here is some good stuff from The Man himself.  Enjoy!!!
http://www.tigerwoods.com/home_custom/default.sps?itype=6272

http://www.rockyknollcc.com