Finally saw this and, um, wow. That was awesome.
My favorite was the part near the beginning of the last act (or would that be the end of the penultimate act?) where Chekov comes up with the plan to hide in Saturn's magnetic field, which is dependent on Sulu's piloting, and so on and the entire crew's standing together. Even if it wasn't realistic, I like that it was basically the crew's "rag-tag misfit" nature that made everything work out (like, they survived only because someone got "lungworm" and Sulu took over, but was a little slow, and because Kirk put everything together, etc).
Also, special effects were win.
Oh, and "Do yourself a favor" may be my favorite pun in recent memory.