As far as I know, there are no actor callouts for the game at this point. Just sound clips from the films. As such, you will certainly hear BC's voice in the game, but nothing recorded specifically for the game. Karl Urban however (Bones) has been announced to be doing custom callouts for the game. That will come as an update... at some point. Great game.

I'm enjoying Eric Bana more so far especially:

"I would rather die in agony than accept assistance from you"

And of course "Fire EVERYTHING!!!!"

"Hello Christopher..........I'm Nero."

There, that's more like it

Benedict, not Benjamin.

All of those mentioned so far are indeed Eric Bana/Nero. My personal favorite Cumberbatch quote:

"My name........is Khaaaaan".

My 14 yr old daughter absolutely loves Cumberbatch, and his Sherlock show, his posters everywhere. What is it with this guy, definitely doesn't have the movie star typical looks. She's even trying to get me to buy the Hobbit because of him and Martin Freeman.

"Oh you are smart, Mr. Spock" – this occurs randomly at the beginning of Vengeance Scoring (the 2nd Vengeance Battle), same as the one mentioned above.

Other interesting stuff, found browsing:
“I surrender”
“Shall we begin?”
“Shall I destroy you, Mr. Spock?”
“Firstly, I will kill your captain to demonstrate my resolve”
“I will target your life support systems…”
“I will walk over your cold corpses…”
“No ship should go down without her captain”
“Noooooooo”

You might also enjoy the Super Pops DMD animation.

I suck....the only call out I have gotten so far is "My name is...Khan" in about 30 games.