Well... for action it was pretty good. More fast paced than most of the other movies were... yet, on the same token, I got the impression that someone woke up at 4am, cobbled together random bits of information and delivered it 4 hours later. Then a producer with too little sleep yawned, scratched himself, and said "Looks good enough" then went back to sleep.
With that said, I like'd how they filled in some blanks that previous movies left behind. If you want to see a movie that shows how it all began... even though they didn't plan on it originally, then go watch it. It's worth it in that respect.