My kids may be a little older than yours but I'm not sure (they're 13, 11, 9, 8, and 9 months) Anyway, I was brought up very sheltered, no TV (actually we were allowed 90 min per week) no junk food, fast food, the list goes ON and ON and ON. I hit adolescence and pigged out on junk food every chance I got, had a morbid fascination with everything inappropriate in the movies and on TV and I went off the deep end in college.
SO with my dysfunctional childhood behind me, I have gone a bit in the other direction with my kids. I let them watch TV with only a few restrictions but they actually watch very little because theyir lives are pretty full of more active stuff. If my kids are dying to see a particular movie that I don't necessarily think is appropriate, I'll take them then we talk about it after - I DON't however let them go out to movies with friends or even friends' parents that I am the slightest bit suspicious of.
This stuff is everywhere and I figure I'd like them to have exposure to it while they can have my influence and make some choices with my watchful eye. So far so good.
I'll let you know in 20 years if I have a clue what I'm talking about
Martha