I cringe at the militant JJ Abrams fawners' posts generally ("Trek should be as much like Mission: Impossible III as it can be!"
) but I'd agree the opening attack on the Kelvin in 2009 is a good sequence. It's a shame the final act of the movie is insanely forgettable and hard to follow in comparison.
The First Contact opening battle is good but it's the show-stopping action on the ship exterior later on in the film that stands out more. Much more memorable than any of the action on Nero's ship.