This subject is something I know too well. My daughter is just about 20 months old; just starting the preperational stage. Though she is not an active viewer of Seasme Street, she does watch Dora the Explorer and Blue's Clues more than twice daily. These two educational shows have the same goal as Seasame Street, to teach children different language and literacy skills and numbers. Dora the Explorer has helped my 20 month old count and even sing (she can recite all the words to the Dora theme song, and she does this every time she sees something Dora). She can count to three in a sequence and after that she messes up going out of order to ten, but she still know those numbers. Dora is also Spanish and a lot of the program has Spanish thoughout it. Since that is a factor my daughter has picked up some Spanish number as well. She will sit and count along in Spanish with Dora. Blue's Clues is another show that airs on Nickelodeon. It teaches sequences, language and colors. I haven't worked with my daughter much on colors and one day she told me what color of popcicle that she wanted. She said she wanted a blue popcicle, not purple. It stunned me that she had learned this from this TV show. She is so attentive to these shows when they are on that she doesn't move for a half hour. These programs truly capture their audience, and if educational programs continue to be this successful, the prosocial value of TV will increase.