Good Wilt Hunting, on Cartoon Network
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The first movie from the series Foster's Home For Imaginary Friends, unless you count the pilot. (Though actually this is more of a special than a movie.)
Well... there's nothing really wrong with this movie, but... I don't think it could possibly stand on its own. You almost certainly have to be a fan of the series to appreciate this, and even then... it's just sort of meh. ...Okay, that's unfair. It's not bad. It's just not as good as I'd hoped.
Anyway, it turns out that every five years, Foster's hosts a reunion for people to visit the friends they created who are currently living at the Home. Bloo, of course, gets upset about Mac visiting him every day, thus denying him the joy of a five-year reunion that all the other friends get to experience. That was totally Bloo, and totally predictable. Meanwhile, Wilt is acting oddly preoccupied and evasive. It turns out his creator never attends these reunions, and no one actually knows anything about his creator. So... Wilt takes off.
Of course, Frankie, Mac, Bloo, Eduardo, and Coco take off in the Foster's bus to look for him, accompanied by Eduardo's creator, Nina, who's now a cop; and Douglas and Adam, a couple of nerds who discovered Coco in a jungle somewhere. (Since we have no idea who created Coco, I wouldn't be surprised if she gets her own special like this someday.) Bloo, meanwhile, is constantly coming up with theories about crimes Wilt might have committed to force him to run away.
Naturally, since Wilt can't stop himself from helping people, he keeps getting sidetracked on his way to look for his creator. And as the movie goes on, we keep seeing flashbacks to when he was still with his kid. And eventually Wilt engages in a basketball game against another imaginary friend, named Larry, to whom he lost a game years ago. Since then, he thought his kid didn't want him anymore, because Wilt let him down. In the course of one of these flashbacks, we see what happened to Wilt's missing arm and wonky eye.
Of course, eventually Wilt and his kid, now a famous basketball player named Jordan Michaels, meet up again, and the gang from Foster's finally catches up, and there's a happy ending for everyone. I dunno what else to say. Except, the movie does have a few nice touches, like the names of new characters. I especially liked the names Douglas and Adam, plus Adam had a "42" on his shirt.