This site has the same vids as the brunswick site (the difference is you can actually save them to your computer)
http://home.postech.ac.kr/~sonovell/clips.shtml

As for others that actually let you save them to your hard drive I don't know any more, but the following let you stream videos from the site:

http://ourworld.compuserve.com/homepages/kennmelvin/kVideo.htm
http://www.lane1bowling.com/videos/ (I think you can save from this site too)
http://www.stormbowling.com/stormtips.asp

and lets not forget fellow Ballreveiwer Toma's site which features clips of his training progress:

http://www.vaitek.com/bowling/training/

You can always subscribe to PBA strikepass too.....
That's all I can think of, I'm sure there are more. Hope this helps
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I can't believe I ate the whole thing......