I've been thinking lately about my co-worker. She is a very devout follower of a religion that I consider to be a false one, but I simply have to admire her actions. In the office she never participates in any of the holiday celebrations, since they are not observed by her faith tradition, but she never makes a big deal about it, either. The office radio is right behind her, and she never complains when it plays all Christmas music.
We all know her stance on these things, but no-one is inconvenienced or embarassed because of it. She quietly does what she believes is right, with no compromise on her part, but no forcing of her beliefs on anyone else here.
I find that immensely impressive. That's a tough line to walk.