Telly was at his best in the mid 80s around when they made the voice change, when they REALLY played his character off Oscar's. And they go wonderfully together here as well, almost stealing the picture. That honor, however, goes to (Super) Grover. His two big comedic moments--when he slams through the Volkswagen's roof mistakenly believing it to be Big Bird ("...oh Big Bird, I found you at last, I...You are not Big Bird! You are imposterers!") and his wild attempts to bend the bars of our favorite canary's cage (especially the climax where he rattles the bars like crazy and lets out that top-of-lungs Tarzan-esque yell before collapsing in exhaustion)--still leave me in stitches today and are easily among the film's very best moments.