AND THEN I got to see it for free when my mentor at work gave me a pair of tickets. It was still good the second time.
Here's what I think about it: It was much funnier than the other movies (not funny, but funnier). There was a ton of teenage romance, more so than I remember there being in the book. As a movie by itself, it was good, but it really didn't focus much on what the book was about. Despite the fact that it's called "The Half Blood Prince" there was literally 3 mentions of the half blood prince during the movie.
Okay, I'm gonna go read the last book now and wait expectantly for the final movies...