We are active members of a UU congregation, and I can say very definitely that our church would be a place where somebody who follows a Buddhist philosophy would be very comfortable. In a majority, even. Each church is fairly independent however so there is quite a lot of variation. What ties us together as UUs is not a creed or set of beliefs, but a set of shared values-- the 7 principles. We have members who call themselves Christian, Jewish, Pagan, Buddhist, Humanist, believers in evolutionary spirituality, and quite a few other variations, too.
Give it a try. DH and I hesitated a long, long time before we finally got up the courage to walk into our church one week, and we were so so glad we did, and wish we had sooner. It was been such a wonderful thing for our family. Everybody was very welcoming, in a comfortable kind of way. We were helped to feel right at home, and made to understand that everybody was glad we'd came, but not in any kind of weird way-- just friendly, you know?
Try it. The worst that can happen is you aren't comfortable or find something that you don't like, and you haven't lost anything at all.
