Okay, so I forgot about those rugby-shirt-wearing kids from Boston who were part of PBS's classic show ZOOM.
Here's a clip from the very first episode of ZOOM, complete with the WGBH intro:
Here's a clip from the second year of ZOOM, featuring Bernadette Yao doing that weird butterfly thing with her arms (at around 0:37 on the clip):
This is a clip from Season 5's intro:
And for those of you who complain about a PBS show not being 100% educational, let me remind you that ZOOM was one of the few PBS shows to feature bilingualism. So if you ever want to say you can speak Ubbi-Dubbi, here's your chance for a refresher course...