Something both depressing and enjoyable:

Wikipedia's category of previous PBS kid's shows.

My god, that's my childhood right there. Thankfully, not everything is on the "cancelled" list: Mr. Rogers and Sesame Street are still on and they're still making new episodes of Sesame Street.

But, man: 3-2-1 Contact, Anne of Green Gables, Bill Nye, Ghostwriter (I loved that show in early elementary school), Lamb Chop, Shining Time Station, Square One, Where in the World is Carmen Sandiego, and Wishbone. Those are just the ones I clearly and distinctly remember watching fairly regularly, and not one of them is on anymore.

The true sign of a PBS kid: Nearly every show you watched regularly in elementary school was cancelled due to lack of funding.