If there's an abundance of something, you can say that there's a profusion of it. Hilarious and bizarre YouTube videos certainly exist in profusion.
The noun profusion comes from a Latin word profusionem, meaning "a pouring out." So you can think of profusion as an outpouring of something — an overflow or cornucopia of it. An area known for wine making should have a profusion of grapes growing along the hillsides. And an awesome performance should garner a profusion of compliments and shouts of "encore!"