Bingowings said:Mark in Slipstream would make for a good battle hardened Jedi (the face fuzz gives him a bit of an Obi-Wan look and makes him look even older than he was at the time), shame that movie is such bobbins because he was really good in it and I love the late Bob Peck, if anything could be rescued out of that film I would be pleased beyond words.
I'm not sure if it got a DVD release however.
Quick search shows that it was released on DVD at one point:
http://www.amazon.com/Slipstream-Bill-Paxton/dp/B0000A03KA/ref=sr_1_3?ie=UTF8&s=dvd&qid=1239388665&sr=1-3
From the looks of it, though, its only in 4:3 "Pan and Scan" and the video quality may not be that great (just reading a few of the reviews). Still, the character that Hamill plays would make a pretty good "older Luke".