I hear people talk about Pearl Harbor as though it were the worst film ever made. I didn't personally think it was that bad. It wasn't necessarily good, but it was entertaining in a very cheesy, hokey kind of way. There was some pretty terrible dialogue (Not anxious to die, just anxious to matter), a little too much focus on the love story and some consistency/accuracy issues (I had no idea that you could take a train from the US to London). I thought the acting was all right. Again, the writing was atrocious in some areas, but I think the actors made due. I don't think Cuba Gooding Jr. had a big enough role. I think the biggest redeeming thing for this film was the attack scene. I thought it was quite well done. The piloting, the effects, the stunts, I thought they did a great job recreating the actual attack, from what I've seen of footage and pictures. I wasn't there, so I can't speak to its accuracy, but it looked amazing on screen.
As for the DVD itself, it has a seperate disc with extras that are pretty entertaining and informative. They have behind the scenes features, about how things were shot, and they also have some historical pieces about Pearl Harbor.
I'd say it's worth picking up. Just perhaps keep your expectations in check.