I just watched it, I don't think I ever saw it growing up (thanks to not having cable). It nearly made me cry seeing everyone together, it was like seeing my whole early childhood all rolled up in one movie
. Most of all things like the Sesame Street cast I remember...Follow That Bird makes me feel the same way, warm and fuzzy
Maybe they don't show it anymore because most of the main characters in Sesame Street are different now? (In who they focus on and how certain ones act) And maybe the crossover with Fraggle Rock is something they think little kids won't 'get', untill the movie at least?
Both those reasons make me sad to think of though