Elmo loves his fuzzy, well-worn blue blanket more than anything in the whole world. Elmo's blanket gets sucked into colorful, swirling tunnel into Grouchland, the yuckiest place on earth. Elmo goes on an adventure to Grouchland to retrieve his blanket. Kevin Clash, Mandy Patinkin, Vanessa Williams, Sonia Manzano, Roscoe Orman, Stephanie D'Abruzzo, Dave Goelz Added on HBO 2022-06-06. Youtube Trailer