While the format of characters watching and commenting on another movie can obviously work, it fails here. Ultimately it suffers from not having enough "Teen Titans Go!", while simultaneously not having enough "Space Jam". The movie is transparently an attempt to bring attention to the reboot "Space Jam: A New Legacy", even though it is never explicitly mentioned. There's nothing wrong with that if the result is good, but this is not.
Early on in the movie (as part of the original "Space Jam") there is a scene where the baseball-playing Michael Jordan strikes out, yet is cheered and applauded by the crowd and other players. Even though he stinks at what he's doing now, everyone comes out to see him because he was great at what he did previously. That's this movie. "Space Jam" is MJ's basketball career, "Space Jam: A New Legacy" is his baseball career, "Teen Titans Go! See Space Jam" is WB hoping fans will go see the new (and ignore all its flaws) because they loved the old, and it's kind of sad.
There are a few good jokes, but they are few and far between. There are some lame jokes, but they are also few and far between. There just aren't enough jokes, period. Apparently they don't want to get in the way of the original "Space Jam" by having commentary all over it, but when minutes go by without any Teen Titans popping up, you wonder why they're there in the first place. Things like the butt-shot counter are OK, it fits the group, but when that's the ONLY joke, it wears thin quickly. A large portion of the commentary also centers on shaming the lead villain's smoking (but not the "doping" scene), and covering up the Tune's use of guns (only lead-spitters though, ray-guns (and ACME explosives) are still perfectly fine). Not enough "Teen Titans Go!".
As for "Space Jam", it gets butchered. Almost all the scenes with NBA players are cut. We see Barkley and Ewing get their talent stolen, and that's it. The other three players are never seen, nor the other teams protests against the "infection", the attempts to cure the five players, or Barkley getting schooled on the playground. Other scenes are trimmed as well. Worse, all the licensed music has been stripped out. During MJ's warm up, he no longer "flies like an eagle", he does slow-motion dunks to electronic elevator music. The player introductions at the start of the big game are similarly missing their signature hype music. Near the end, they end the watch party before MJ's return to the NBA, missing an easy setup for at least a couple more jokes about his on-again-off-again basketball career. Not enough "Space Jam". (Interestingly, the cut actors, cut music, and stills from the cut scenes are all still included in the end credits, which are tacked on from the original "Space Jam".)
If you're a "Teen Titans Go!" fan who's never seen "Space Jam", this might hold your interest, but you'd be much better off enjoying them separately.
