Yesterday I had an unsettling squad experience playing BC2.
I joined a game and was put into a squad with three children. Now by "children" I don't mean teens or even tweens, when I asked how old they were I got these responses: ten,eight, and seven. I don't have children so I have absolutely no right to discuss parenting, but come on... SEVEN?!?

BC2 is very violent (there's a surprise) and has some pretty foul language built into the game, not including what you occasionally hear over chat. I guess that "Mature" rating really means nothing to some people.
I concede that the kids may have been temporarily unsupervised and merely gotten into dad's video game stash, but these kids were good at the game (which is disturbing on a wholly different level) and had obviously played many times previously.
Good news is this: We won the round and we were the best squad... go figure.