I have not had luck with book clubs in the past, and so have not been to any in years. Are there any sort of book clubs that you have had particular luck with?

I can second university clubs -- philosophy and political science clubs have been good to me in the past, and math club was fun. These are pretty much limited to students, unfortunately. It might be interesting to hunt down a philosophy club for older adults, if I can find one that doesn't focus on spirituality/religion.