I found EGGcellent Diner to be painfully average. The service was very straight forward, with no flair whatsoever.
My friend had a strawberry milkshake which he said was pretty good. I had a coffee and the three eggs benedict. The coffee was somewhat resentful, but drinkable.
The three eggs Benedict did have three eggs, but only two english muffins and two pieces of peameal bacon. Kind of seems like false advertising. The side of hash browns left much to be desired. They were pretty flavourless and slightly undercooked. The hollandaise sauce was also just very plain.
So like I said, an overall average experience. That being said, the prices reflect this averageness, and are noticeably cheaper than many places.
If you're looking for a quick breakfast for a fair price, then come on in. If you're looking for a breakfast experience that cannot be matched in your kitchen at home, then carry on.