I've never been approached by Christians pushing religion
I was once told, to my face, on a train station platform, that the necklaces I was wearing (a Celtic cross and a rune stone) meant that I was "worshipping a false god and would go to hell". She was very nice about it, but there you go.
I've also had Jehova's witnesses knock on my door, on occasion I've been stopped in the street and invited to talk about religion, I've seen people standing in the street with a megaphone proselytizing at passers by, I've even been approached in a pub by someone from a group meeting in a room upstairs inviting us to join them.
That's ignoring the references in popular culture - movies and music especially contain numerous references to Christianity, God, etc, the evangelical pastors and groups, etc.
On the other hand, I've never had an atheist approach me and push their non-belief on me. (And it's not like I have "atheist" tattooed on my forehead, although I am one)