Sheridan has been on my should-try list for quite some time. The start of real ice cream weather seemed like the perfect excuse. It's on Lawrenceville Highway in the Wal-Mart shopping center.
I just had a basic chocolate frozen custard. It was straightforward, your basic soft ice cream, but good. They have a variety of toppings and mixins, including something they call concrete. I went through the drive-in; they don't seem to have indoor seating.