The new Star Trek film, a prequel of sorts to the original series, could be absolutely awful but the new trailer certainly makes it look action-packed, a nice change from the moribund Star Trek: Nemesis.
However, I'm still not sold on recasting the original roles and rebooting the series. Part of what makes the original Star Trek series so much fun is the camp, 60s vibe, not to mention the interplay between Shatner, Nimoy, and DeForest Kelley. From what I've heard, this new film isn't trying to fit cleanly into the mythology of the TV series and the existing movies. Think of it as a new vision of what Star Trek is using parts from the original series while violating all sort of elements of the existing mythology. I guess there's time travel involved so maybe the things that fly in the face of the Trek canon are simply explained away by someone from the future coming back and mucking with things. Maybe it will work as a sci-fi movie but at the expense of 40 years of Star Trek lore? We'll have to wait until May 2009 to see but until then, I'll have my doubts.