An excellent movie. I saw it in Imax on Saturday...and wow! I hope to see it again in theaters. And maybe a few more times after that...

The actors did a great job playing the characters. My favorite moments were the beginning, when Kirk first meets McCoy (Karl Urban played McCoy, my favorite character in Star Trek, and he did an excellent job. I did see a lot of DeForest Kelley in him, especially when we first meet McCoy, when he was arguing with Spock and when he was smuggling Kirk aboard the Enterprise), the Kobayashi Maru test (lol) was another favorite moment, Kirk trying to explain what the Romulans are up to while McCoy is trying to decrease the side-effects of the vaccine he gave him so Kirk could get on the Enterprise, Kirk's reaction when he meets old Spock, Sulu fencing, when we first meet Scotty and old Spock, Chekov running to the transporters, all the while exclaiming "I can do this! I can do this!", the final battle, and of course the end with Leonard Nimoy (seeing him reprise his role and meeting young Spock was fun too) saying "Space, the final frontier..." monologue over the Enterprise and her crew warping off to go explore the universe.
Favorite lines:
"Your father was captain of a starship for twelve minutes. He saved 800 lives, including your mother's and yours. I dare you to do better."-Captain Christopher Pike (I really liked Pike in this movie, and would really like to see a cameo of his character in the sequel.)
"I don't need a doctor, I am a doctor!"-Leonard McCoy.
McCoy's whole rant about how dangerous space is and how he gets his nickname.
"I may throw up on you."-McCoy to Kirk, Kirk says the same thing to McCoy later.
"Out of the chair."-Spock, to Kirk, who is sitting in the Captain's chair.

"I'm a doctor, not a physicist!"-McCoy
"I'm giving her all I've got, Captain!"-Scotty
"I can do this, I can do this, I can do this!"-Chekov
The whole Kobayashi Maru scene...lol.
"Would you rather I roam the corridors weeping?"-Spock, during McCoy and Spock's first argument.
"Green-blooded hobgoblin."-McCoy.
Yeah, I really liked this movie. Yes, I am a Star Trek fan.

Five out of five stars. Can't wait for the sequel. (And perhaps a new tv series?)