There are also some great Southeastern breweries like Terrapin and Highland. Not sure if they are available in NJ though.
Terrapin are cool if you like to collect unique bottle labels too.
My suggestion for a beer to get would be Southern Tier. Try to get Gemini if they have it or Un-Earthly.
Edit: Ah just saw others put it on the list. At least I can affirm it's good beer.