Channel 45 (YTV), Caillou ( pronounced as kai u)
Channel 51 (Family), Franklin,
Both are very good programs for yr 2-6 kids, good morale, good pronounciation.
Some other good ones: Arthur, Little Bear (not sure its exact name), and etc.
If you can't receive those two channels, you can buy videotapes, around $10 each.
I did the same thing for my nephew when I went back to China.