Mariah Carey to make an already epic moment even more magical! As part of YouTube's graduation special, the cast of reunited — in character — to share a special song for teachers and this year's graduating class, and got some very special help from the elusive chanteuse herself.Eugene Levy, Catherine O'Hara, Daniel Levy and Annie Murphy — playing their characters Johnny, Moira, David and Alexis — all came together, via Zoom, to perform Carey's iconic tune «Hero» in honor of the teachers and