Machineman: this is unlike any other Trek ever created. It rethinks most of the technology, as well as the story (whoops!), but leaves the characters pretty much as they were intended to be.
A friend of mine went to see a screening of Star Trek II: The Wrath of Khan in Austin, TX a week before the new movie came out. Just after the beginning credits finished, the film burned up. At that point the house lights came up and who walks out? None other than Leonard Nimoy himself! He asks the viewers if they want him to try to reload the film, or if they would just like to watch the new movie . . .

He even sat there and watched it with them!
One thing to remember about this film: Nimoy told an interviewer that when he sat on set watching the interaction between Zach Quinto (Spock) and Karl Urban (McCoy) that he actually got misty-eyed and teared up. That should satisfy nearly any die-hard Trek fans worries about the characters.
The old Trek space battles always felt to me like WWI naval battles. By comparison, these battles are like watching WWII dogfights. Not the usual, at all!
