As a former Indianapolis resident, let me tell you how lucky Indianapolis is to have great Greek choices. I now live in Cincinnati, where the only Greek food available are gyros. So, if you're just visiting Indianapolis, give some of those Greek restaurants a try! I promise it's more than meat in a pita.
Acropolis serves amazing Greek comfort food. I usually get the moussaka, which is like an eggplant lasagna. I love the potatoes and green beans that accompany the entrees. They seem to be slow-cooked in olive oil and lemon juice.
The place itself is pretty cute, and it can be more convenient than Santorini for south siders. The service has always been pretty good but not remarkable.