The waste of talent that was Wild Wild West. Really. I said so back in '99.
Day 04 - Your favorite show ever
This is a tough one. A real eye-opener for me was the American version of Max Headroom back in the mid-80s: dystopian, interestingly cynical and funny, and able to make the real world look slightly futuristic (the show's slogan was "Twenty Minutes Into The Future"). The second-to-last episode, where reporter Edison Carter gets hooked on a virtual-reality drug (that's the simplest way to describe it) and his usually flighty alter ego Max Headroom has to talk him back to reality, could've been a brilliantly dark final episode of the series had it been switched with the real final episode and re-edited so that the company from New Tokyo did buy Carter's network.
I got wrapped up in that show, really savoring it. That was one of the first times I did so with a show. It likely paved the way for me getting similarly wrapped up in Twin Peaks a few years later.