What religious services have you been to?

[DavidB.]

I am going to the synagogue on a weekly basis (but sometimes more, sometimes less).

I have once been to a service in a mosque, with my high school class. When I was very young, my paternal grandparents, who are very religious Catholics, once took me to their church, without my parents giving them permission for that... which was immediately the last time I slept over at their house (though I'm not sure if I in fact attended the service as well)