Wow, I always wonder what they really look like, Dee Dee Doodle is rather pretty!
My dd used to LOVE this show, she's not into it as much any more, which I'm greatful for since I find it rather annoying and those songs get stuck in my head alllllll day.
I think rationed TV time is fine. I used to let dd watch as much as she wanted, which ended up being all day. When I realized she wasn't playing with toys or doing anything children should do and that it made her cranky after half a day of watching, I limited it to one hour a day. She's been allowed 1 1/2 hours since the baby was born. I figure that's fair since she usually wants to watch a movie and some are longer than an hour. She doesn't like the limited time, but I've noticed very positive changes in her. I never meant to let my kids watch TV all day, we just sort of slipped into it, but its under control now!
I wouldn't worry about one little 20 min show.