Mine is basically a bad and unfunny joke based on the line 'Obi-Wan was your Father' which was originally delivered by Dave Prowse as Darth Vader on the set of ESB to keep the plot twist a secret (The line was later dubbed with 'I am your Father' by James Earl Jones). When I was signing up I had no idea I would end up being such an active member of the OT.com community so I didn't give much thought to my name - if I had it would be something cooler and/or easier to type (maybe just 'Yoda')