If you have never been to a diner runs by Greeks, then you don't know about their menus. From breakfast to dinner there are hundreds of items on the menu. It can be a little overwhelming if you haven't seen a menu so large, but it's usually not in vain because nearly every item is good or exceptional.
In the case of the Soda Jerk Diner, I can say it's in line with other Greek diners I've stopped at in the past. We couldn't finish our portions but we tried our best. Service was fast and attentive and the food was cooked to order. We ordered lunch items so I can't comment on the breakfast, although it looked great from what I could tell by the huge plates sitting in front of some patrons.
I would definitely go back when in the Hershey area again, and plan to try breakfast next time.
And if you are familiar with the Double T diners around the Baltimore area, or the Boulevard Diner in Dundalk, MD (which was featured on Guy's Triple D on Food Network) then you will like the Soda Jerk.