Crowdfunding is potentially a big deal for media SF/F fans. How many times has a great show been cancelled prematurely, despite having more than enough of a fanbase to cover production costs? It's still a fledgling concept, but direct fan funding has the potential to revolutionise the video production industry, and prevent the repeat of debacles like the cancellations of Firefly and Crusade, and the disruption of the last two seasons of Babylon 5.

The Veronica Mars movie project has gotten a lot of publicity; it's not SF, but it's notable for being the first official crowdfunded revival of a studio property. Having WB holding the leash is a big drawback, though; there's been very little communication with backers. The potential for new creator-owned projects is a lot stronger, though there is the problem of how to attract supporters for a project without a pre-existing fan base. Joss Whedon could certainly do it, though!
http://www.kickstarter.com/projects/559914737/the-veronica-mars-movie-project/

Star Trek: Renegades might interest many of you. It's technically a fan film, but it's directed by Tim Russ (Tuvok) and the cast includes Walter Koenig as Admiral Chekov and several members of the Voyager crew along with other professional actors. They ran a successful kickstarter last year and are currently in pre-production, but they're still looking for additional funding to improve the quality of the production:
http://startrekrenegades.com/home/donate/

Pat Rothfuss is one of the writers for Torment: Tides of Numenera, a story-focused computer RPG which is a spiritual sequel to Planescape: Torment (one of the best computer games of all time); it looks very promising to me. Three days left to back it:
http://www.kickstarter.com/projects/inxile/torment-tides-of-numenera