[Searching for a Chrono Trigger remix]

Sounds like Millenial Fair 2001, by Zeratul.

[Super Smash Bros. Brawl]

Edit: I just read that Pichu and Captain Falcon have two taunts each. Does anyone know how that is done?

When facing right, Pichu's taunt makes him lie down and have some kind of spasm. When facing right, he'll jump instead. Captain Falcon's taunts are also different depending on which way he's facing, though the difference is harder to notice.

For non-Pichu players, winning a competitive match using Pichu is an innate third taunt.