I'm with Lydia. It'll come inevitably if you've got a TV in the house. I wouldn't go out of your way to encourage it!
At your DD age my girls really honed in on the TV, but only non-animated stuff. They wouldn't sit for anything animated until the last two years or so...except Nightmare Before Christmas
I did fall into the habit of too much TV for them for a long while. Basically late 2009-late 2011 while I was wrapped up in bedrest, high risk pregnancies, grieving, etc. but this year I have worked hard on honing it back under control. As of now they get to watch TV in the morning if its a weekday off school but no other TV during the week no matter what-even if one of them is home sick from school. On the weekend they can pick an hour of starfall/coolmath4kids.com on the computer, an hour of TV, or an hour playing games on an iPod. And that's pretty much it.
When do I watch TV? When they're in bed. Some days I'm up early enough to turn on a show while I told laundry or pack lunches but more often I grab a wind down moment between them being in bed and DH getting home from work, then it's off.