I've been thinking... Should I change the name to ''Henson History'' because not all posts are about muppets...?
It's up to you, but I think the name's fine personally. With 'Muppets' in the title, it might draw more people since not every Tom, Dick, and Harry (no, not them!) knows who Jim Henson is, but almost everyone knows the Muppets.
Course this isn't based on fact, just general musing on my part.