Beyond Belief Media Declares War on Christmas
No really:

"Christian conservatives complain nonstop about the 'War on Christmas,' but there really isn't any such war," said Beyond Belief Media president Brian Flemming, a former fundamentalist Christian who is now an atheist activist. "So we have decided to wage one, to demonstrate what it would look like if Jesus' birthday were truly attacked."

As its opening salvo, Beyond Belief Media has purchased advertisements this week in the New York Times, USA Today and the New Yorker magazine. The company's 300-member volunteer "street team" is also descending on Christmas-themed public events with random "guerilla giveaways" of Beyond Belief's acclaimed DVD "THE GOD WHO WASN'T THERE."

I think this is a pretty annoying thing to actually do, but the idea is funny.