Thanks for all the suggestions guys.
Please keep them coming as I am always looking for a new favorite.
I was an early fan of Harpoon back when they came out with their excellent IPA and their UFOs are always interesting.
Haven't tried Grolsch or Elephant in a while. Grolsch was one of my favorites back in the 70's when you had to buy an import to get something with some flavor. I did try a few Elephants but did not like it as much as I did the Grolsch.
Victory was another early favorite of mine and I have been to their brew-pup/restaurant in Downingtown many times. When they first opened it up it looked like a warehouse but they steadily improved it and I'm sure it's even better now. I like their Storm King, Old Horizontal, Hop Devil, Hop Pocket, Golden Monkey, and a few others. You can get their brews on tap in several places in my area of NY. I haven't seen the Yakima Twilight yet but I will keep my eyes open. It sounds very interesting!
Weyerbacher is probably my favorite PA brewer. I really like almost all of their offerings particularly the ones aged in old bourbon casks. Try the Insanity (Blithering Idiot aged in a cask), Blasphemy (Quad similarly aged), and Heresy (Old Heathen, also aged). Unfortunately they don't market cases of 12 oz bottles in my part of NY otherwise I would have picked up one already. Every Saturday they have an open house at the brewery in Easton. They also used to have a really great one around April first with beer tastings and a tour but have since discontinued it. Try their Black Hole if they still make it. One of the best regular dark beers I've had. Their special anniversary brews are also very good. I still have a few of the 10th, 11th, and 12th aging in my basement.
Stoudts also isn't bad and has expanded their offerings. I've been to their Beer Garden many times for festivals and just a beer and a pig roast. The attached restaurant isn't bad either.
Dogfish Head is probably my favorite east coast brewer but it's hard to get more than a 4 pack in this area of NY. I would love to have a case of their 120 minute IPA or World Wide Stout aging in my basement. Unfortunately, they have become very expensive and fairly scarce in this part of NY.