I saw Pacific Rim on Friday night with the bros. It was actually a good time. I'm not saying the movie is for everyone, but I enjoyed it. The plot is ridiculous, but so what? Giant monsters vs giant robots has worked for many years so why stop a winning forumla (Voltron, Power Rangers, prolly a bunch of other stuff).
Don't take it too seriously and you will have a good time. Plus, when I was pak'd with the bros later I got to use the line: "my jaeger would pound so hard on that kaiju." Worth the price of admission for that clever quip.