blue's clues

what is it about blue's clues that gets my never-sit-still-for-anything son to do this:

there are other movies he watches (like baby einstein, the wiggles, sesame street) and none of them cause him to just sit. what is it about joe and blue?

ps i got a picture to upload. i did a small one and was able to be patient and it only took 8 minutes! but isn't he cute?