The boys over at Empireonline were granted a seat at the first ever World screening of some new Star Trek footage, presented by JJ Abrams himself, and have put together a long and comprehensive page full of interesting information about the separate clips shown (albeit completely filled with spoilers, so be warned). It's definitely worth your reading time if you're looking forward to this movie, as I'm sure you can tell I certainly am!
Click on this LINK to read all about it.