Everyone's said the obvious choices, so allow me to throw a curveball: Mario Party DS.
No, seriously. The cutscene begins by fading into Bowser and son tied up with ROPE. A material that can be easily destroyed by fire and sharp things, two resources that the Koopa King carries around with him all the time.
But that doesn't matter. We have all five Star Crystals, and so it's time to see what they make when they combined: a minigame.
Specifically, a Bejeweled clone with triangles instead of gems and half the content. Bowser goes on to explain that he wanted to collect all the Star Crystals because according to Koopa lore, which they have for some reason, "When the Star Crystals fall from the sky, a really fun challenge will be revealed." A really fun challenge? Your species fortells of really fun challenges? Why couldn't it be "the bravest of Koopas will find their wits tested" or "happiness will be bestowed upon he who gathers them?" But no, we're going with the first thing the translator could think of, apparently.
Wait, what? No, I don't want to share the minigame with him, he shrunk me to the size of a coin and left me and all my friends for dead, you idiot!
Oh, and apparently Bowser is an idiot too, because he doesn't take the opportunity to kill them and claim the minigame as his own, because now he really likes the Mario gang, blatantly disobeying a fundamental Mushroom Kingdom law.
But the credits music is really good, so that's alright, then.