Princeton and Kate Monster dueting on "Love is an Open Door"? Trekkie singing "Do You Want to Build a Snowman?"? Rod belting "Let It Go"? Like everyone else who has working eyes and ears, the cast of off-Broadway's Avenue Q love Disney's Oscar-nominated blockbuster Frozen. Of course, the people and puppets of Avenue Q have been singing soon-to-be-EGOT winner (fingers crossed!) Bobby Lopez' amazing tunes for a while now. On January 21, the cast of the Tony-winning tuner made a video to congratulate Bobby and Kristen Anderson-Lopez on their Oscar nod for the tune "Let It Go," and it's a doozie!