Holy Roller
Noun
Meaning
a member of a religion that expresses ecstatic fervor
Source: WordNetHypernyms
Examples
When I was older, that whole odor of home-made gin, pigs’ feet, chitlin’, and poverty, and the basement: all this got terribly mixed together in my mind with the Holy Roller, White God business.
King's call of the Holy Roller has been labeled (by Chris Berman, among others) as one of the five best in NFL history.