I haven't found much proselytizing on the channel, either.
As far as proselytizing goes, I've found the Mormons to be the most "polite" about it; they ask you if you want to hear about it, you say no, and that's about it. We took the marvelous Temple Square tour a few years ago in Salt Lake City and I was amazed at how things went. The guides explained what they believe, answer any questions and that's what you get. The tour is free and they won't even allow you to make a donation; they suggest that you to donate to your own church or charity. I've almost had to fight off some other groups who just won't take "no" for an answer.