I was really glad when it came out and it was really enjoyable, but now I've got BoG and the JSAT special has become nothing special to me. I quote KaiserNeko's post in the BoG thread which pretty much sums up how I feel:
KaiserNeko wrote:This movie expands greatly upon the universe, introduces a FANTASTIC new antagonist, has some stellar animation (though, as many have said, it's a tad... awkward at points), and has a ton of comedy and character. It also takes some TIME to have some fun with these characters; not just retreading the same old jokes. Gohan getting drunk, Vegeta having to placate Bills, Bulma getting to be what felt like an actual character again, Trunks having a "girlfriend", Goku flat out LOSING.
The Jump Special was just... the characters from DBZ having a party and a random alien showing up, then them beating it, padded with an absolutely dreadful scene involving radishes. Sure, Table shows up, but he doesn't bring anything new to the table. No pun intended. He's just sort of... there.
I'll agree that the pacing of the movie isn't perfect; it takes way too long for it to get down to business, but it was at least nice to have some real character interaction this time around that felt more organic and involved than any movie before it. I mean ANY. All of the other movies felt like retreads of previous arcs, making up excuses for fights that were rarely as engaging or involving as what happens in BoG.
It was enjoyable at the time when it came out solely because it was the first Dragon Ball anime production in over a decade. I don't feel nostalgia for the reunion anymore since the franchise is now alive again, and without it, the entire special feels meaningless. In addition, some out-of-character moments and timeworn jokes bother me. I don't like the color scheme, too. The Kikuchi score is one of the few good points.
Some people seem to think that the special feels closer to the manga and very Toriyama-esque because of its lightheartedness, but It doesn't feel that way to me. Sure, it's lighthearted, but in my opinion, Toriyama would not write something like it. Most of the obligatory elements presented in the special are what the anime series had been making up such as kamesen'nin beaten up by woman and Goku being too greedy for foods. The original manga did have some scenes showing these characterizations, but it's the anime staff who strongly stereotyped them. I don't find real Toriyama-esque-ness in them. It's not that simple.
In short, now I think it's overrated.