No list of "best pancakes in the USA" can be complete without including at least one Hawaiian restaurant serving macademia nut pancakes with lilikoi (passionfruit) syrup

The Gazebo Restaurant at the Outrigger Napili Shores on Maui
Boots & Kimo's in Kailua (Oahu)
-Ono grindz dat brok' da mouf Brah!!!

Now for buttermilk pancakes, I've gotta put in a plug for a Berkeley, CA classic--Bette's Diner
http://www.worldpantry.com/bettes/home.html