Ryan VS Dorkman, or RvD, is not a fan film per se, but more or less THE most popular lightsaber duel there is. It was released in 2003 for the now annual "Lightsaber Choreography Contest" and won first price. 3 years Later, in 2006, it became a huge hit on youtube, and inspired both Ryan and Dorkman to create the first ever major production lightsaber sequel; Ryan VS Dorkman 2.
The cast is just 2 people; Ryan Wieber and Michael "Dorkman" Scott.
RvD, and it's sequel, can be found at the guys' own site, [www.RyanvsDorkman.com]