Dosa Corner in Columbus. Its South Indian, what I've had was not crazy spicy, but I love Indian food more than anything else and may have a different idea of spice.
Went to an Indian friends wedding a couple years ago. Was one of six white people in a 300+ person two day party. Everyone asked if I was able to eat ok, best food at a wedding ever. Only one thing, which I'm pretty sure was 90% salt, didn't line up with me. Mmmm... so good.