My sister introduced (or reintroduced?) me to this old clip from the Muppets recently. I showed it to Dulcie yesterday and her face was an absolute picture - totally entranced throughout and bursting into a hearty chuckle every time one of the tubes got booted off stage. I bet you can't watch it without smiling :)
And here's a wee extra - a papercut stop-motion film created by Jim Henson in his early twenties. I came across this via somebody's blog recently, but I can't remember whose, so apologies if it was yours and you would have liked credit for your excellent recommendation. I did appreciate it.
PS If you (or your toddler) want to be further entertained, Dulcie also seemed to appreciate this one and this one. And this one, obviously. Apparently Animal (when doing the "Mama" bit of Bohemian Rhapsody) is "just like" my dad. Interesting to get this insight into how Dulcie views her grandfather!