Have you seen this? It’s Ryan vs Dorkman… one of the best home made Lightsaber movies I’ve seen. You can find it on Google Video, but here’s a high quality QuickTime. I found this on multiple sites, so I’m not sure who to give credit to.
Also, try this… go to Google Video and search for lightsaber. Apparently, everyone and their brother has made a home made lightsaber movie. Who knew?
I especially like this one… it’s the low-tech approach.