Graham Central Station is hands down the best ice cream I've ever had. Never been a huge fan of ice cream and dairy products in general but I could eat my weight of GCS. Huge chunks of graham cracker with chocolate-covered I-don't-even-know-whats.
Be forewarned. A waffle cone "single" scoop is more like a single, shovel scoop. It's huge. We have to eat in our car during the summer months; otherwise, it melts and drips faster than I can gobble it down.
Their other flavors are really good too but I've now synonymized "Handels" with GCS. They'll let you try any flavor you want but try to save GCS for last so you can at least consider the other flavors before dedicating your life to GCS.