There's a reason the old saying that "pizza is like sex—even when it's bad, it's good,"* exists, but it fails to take into account Greek pizza, which is only ever good when it's not terrible. There's no real middle ground here. In other words, if your Greek pizza ain't spectacular, then it ain't worth eating. And spectacular is what we're after.
'Greek pizza' on Serious Eats
I've said this before: The vast majority of Greek pizza is not worth eating. This describes basically all of the Greek pizza I ate in Boston during college. But it doesn't have to be that way, and George's Pizza House, a 42-year institution in Harwich easily proves it.