If you want your children exposed to intellectually stimulating content on a regular basis, you'd be well-served to throw that TV out the window. Take them to the library. Read a book. It's cheaper than TV, a bonding experience, and the walk will do you good. If you let your children watch TV willy-nilly (or internet, or PS3--whatever), then you deserve to churn out consumerist robots who value fruit punch capri suns higher than sexual fidelity.
Since leaving home at 18, I don't watch television. I don't even own one. And I count my blessings that I don't have to filter my entertainment through a 1:3 ratio of ads for crap I'll never need.