I've been going through withdrawl since Enterprise was axed. How could they do such a thing? OK it wasn't that good but Star Trek is like a soapy. It's like axing Days of Our Lives.
Anyway some enterprising (pun) amateurs have started their own show called "Star Trek New Voyages". It's based on the original series with Kirk and Spock but with younger actors.
Two episodes are ready for download in WMV format. More are in the making. They are not allowed to make money out of the show so the episodes are free and legal to download from the net.
Pretty good for a small production team I reckon. Kirk is played by an Elvis impersonator and it shows. A bit corny and goofy but worth watching. The special effects are really good, better than the 1960's show.
Their page
http://www.startreknewvoyages.com/1024/home.php