Favorite childhood shows?
This depends on what you mean by childhood, because there are at least three categories.
Actual Childhood (10-years-old and younger)
I essentially was raised on Disney Channel, so there are a lot of memories associated with 80s and 90s Disney and the wide variety of programs they used to have, which sadly doesn't exist anymore. My favorite shows would mostly consist of My Little Pony, Care Bears, Alice's Adventures In Wonderland, The Many Adventures of Winnie The Pooh, Under The Umbrella Tree, Ocean Girl, Flash Forward, The Torkelsons, The Baby-Sitter's Club, Brotherly Love, among many other things they used to show, including the Disney Afternoon shows like Gargoyles, DuckTales, Darkwing Duck, Chip 'N Dale: Rescue Rangers and all of those.
We also watched PBS, with such shows like Sesame Street, Reading Rainbow, Wishbone, Ghostwriter and Where In The World Is Carmen Sandiego? being among my favorites. And then FOX Kids had Goosebumps, Mighty Morphin' Power Rangers and Eerie, Indiana. We also saw bits and pieces of other family sitcoms from other channels, like Full House and Family Matters.
We also watched Babar, but that was exclusively on HBO, which we didn't have, so we had to get family friends to videotape the episodes so we could watch it back home.
While I still watched Disney Channel from time to time, I did venture onto other things. This was the start of my discovery of more shows on other networks, this included catching up on reruns of Saved By The Bell and California Dreams after school. But it was during the transition from sixth grade to junior high where I discovered Nickelodeon, first with Clarissa Explains It All, then with All That, Kenan and Kel and Are You Afraid Of The Dark?, and it just went on from there. It's where I ended up becoming obsessed with the shows from that era, including the Animorphs television series which, while understandably many book fans weren't pleased with, but I didn't care because I liked the cast (and the fact that both Shawn Ashmore and his twin brother, Aaron Ashmore, have become quite successful today is quite impressive, as I'll always remember Shawn Ashmore as Jake, and then later as Tyler from Disney Channel's In A Heartbeat).
Teenage Years and onward....
Around my pre-teen years I also discovered Buffy the Vampire Slayer and Charmed, which of course BTVS became the biggest show for me for many different reasons. I came into the show during its third season and was obsessed with it, and it became my biggest fandom for the longest time. Charmed I got invested in because I loved The Craft and anything associated with magic/witchcraft I got into, though I stopped watching for reasons I can't remember. Nevertheless, this is around the time I got into many WB shows, including Dawson's Creek, Roswell, Sister Sister, Sabrina the Teenage Witch and so much more, which has led to much of my television and fandom obsessions to this day.
I sometimes forget how many shows I have watched throughout my life until it's basically all written out, and even then I know there's still a lot more that I'm forgetting.