lilyka, I'm with you about "Arthur" and the meanness. Which is a shame, because the show has good points. But we don't want them watching it anymore because of the mean-spiritedness of a lot of the characters.
We've stopped putting on NickJr shows in the house, for the most part, though I did like "Blue's Clues," "Little Bill" and "Little Bear." Don't like the commercials in the house. We've watched some of "BC" again, though, since the new guy started ("Joe") because we watched the first one that they showed at night and the kids really like him. (He is kinda cute ...
"Zaboomafoo" is a favorite, and after dinner DH & the kids curl up on the couch for "Wild Discovery," which while not a kids show specifically, is a lot of fun.
My kids don't love "Barney," but I don't understand how so many folks are so anti. He's purple, he's happy, and he's unconditionally loving and accepting. How bad can that be?
"Between the Lions" and "Reading Rainbow" are the last two regulars in the house.
On a slight off-topic note, re "Reading Rainbow," DS#1(4yo) recently has been interested in "Star Trek," which we sort of let him see (with supervision, and a finger on the fast-forward button). So he recognized LeVar Burton ("Geordi" on ST:TNG) from "RR", and said to me, "Is that LeVar?" He was fascinated about LeVar Burton seemingly on a spaceship and then how does he do the "RR" shows and why are people calling him another name and why does he have that thing on is eyes but he doesn't wear glasses on "RR". It's been a great lesson for him in the reality and unreality of the media ... which we all tell our kids about but I don't know if they really get it. He's getting it now.