https://www.facebook.com/photo.php?v=10101253221161575&set=vb.119249468124144&type=2&theater Well it's not exactly a new concept, but they are singing a new song and who can ever get sick of Megatron's singing.
I think we had that one last year, but the kareoke is new - and sorry Megatron, but Mark Hamil as The Joker stole that one (as is only right - it's my personal tradition to watch that episode every Christmas!)
