He brought over a 40 min dvd on the Jurassic period the other day but spent the duration of the dvd explaining the different dinosaurs and how they became extinct to me! He says he is going to be a paleantologist when he grows up!
Awwww... that's sooo cute!

I think it matters how THEY treat the TV. I know kids who sit completely still and stare at the screen for hours at a time (or at least half hours). My DS doesn't sit still very long - even when 'watching' TV. He might watch 3 minutes of it - then run and get toys and play a bit before watching another 2minutes... So I don't see that as unhealthy as there's no 'zoning out' or anything. And he would rather play with us than watch any TV - so I'm ok with that! Oh - and he was watching TV from that age - but we did limit it and certainly had other stimulations so he got variety. Balance is the key I reckon!