Okay, I hate to say it, but...
Best. Trek. Ever.
Go see it. Go see it now. Then, go see it again.
Was it flawless? No. Did it have plot loopholes and convenient encounters? Yes.
So did Wrath of Khan.
I never thought that Star Trek II would ever be surpassed. I didn't expect this one to; as long as it was better than Star Treks Five through Ten, I was going to be ecstatic.
Casting? Brilliant. Writing? Superb. Acting? Top notch. Special Effects? Perfect.
And several times - silence in space.
The whole movie, I kept thinking that I couldn't wait to get it on Blu-Ray and watch it over and over again.
What are you doing reading this? Go. Go see it. Go see it now.
Live Long and Prosper, J.J. Abrams.