I just watched "Across the Universe" and I thought it was pretty good. I wouldn't go so far as "perfect" though.
I thought the story was good and it was written in a way that the music really fit the storyline. The two things I didn't like so much were:
(a) It was a very long movie. I found myself looking at my watch, and
(b) Almost all of the songs seemed a little slower or more mellow than the originals. I would have liked some of the music to be a little more upbeat.
All in all, I recommend it to anyone who is a Beatles music fan. It's like a grown up version of High School Musical with better, but unfortunately slower/more mellow, music.