videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including MrStarFan64's RMB #421: Team Crow vs. Team Jake The Dog, MrStarFan64's RMB #243: Spongebob vs. Darwin, MrStarFan64's RMB #368: Wakko/Yakko/Dot vs. Bugs Bunny/Duck Dodgers/Taz