There's finally a decent St. Elsewhere site on the internet. I had caught the show periodically when the Canadian cable channel then known as Prime ran episodes after M*A*S*H reruns, but it was the DVD release back in 2006 that got me hooked. Unfortunately, the DVD releases stopped with the first season: while there are some good episodes in that set, it's the least characteristic season of the show. I eventually managed to get a hold of the rest of the series in some form or another, and season two is where it starts resembling the show it would be for the rest of its run: Dr. Jack Morrison suffering through the first of many tragedies and indignities that befall him, the "you're a pig, Ehrlich" running gag, autistic Tommy Westphall, and the obsession with continuity that would pay off greatly as the show goes on. It's a shame this show isn't more readily available.
Viewers with nostalgia for the PBS kids shows they grew up with should also take a look at The Neighborhood Archive, a tribute to Fred Rogers and comprehensive exploration of his biggest TV legacy, Mister Rogers' Neighborhood. There's a detailed episode guide that's still in the process of being put together (the webmaster is almost finished summarizing the 1969 season). Looking at some of these episode summaries brings me back to when I was watching the show in the late 80s and PBS still ran many of the older episodes during the spring and summer. I remember they would run a block of newer episodes with school-aged Prince Tuesday and Ana Platypus, then in the next week's shows, the model neighborhood in the titles would look different, Mister Rogers would have darker hair, and the walls of his "TV house" would be brown instead of blue. Watch this video of the 1970 opening and closing (pre-PBS, when the show was still called "Misterogers' Neighborhood); even if you weren't watching the show the last time that season aired in 1989, the music playing during the art card with the trolley and the episode number will stir some memories for people of a certain age.