Most of our groups skew toward the more religious overtones, but we have one where several members congregate a half hour before the official meeting time and do 30 minutes of meditation together. AA members from the adjoining meeting have started coming in for that as well.
I think that having a ritual can be comforting, whatever my feelings about the actual prayer. I have this thing about the Serenity Prayer myself. A couple of times people have forgotten/not used it it at the beginning of meetings and I found myself feeling really tense and wanting to say something. Silly, because I can go home and say it to myself a million times whenever I want, but for me there's something about saying it with the group. I don't know.