Have you found a restaurant where though you've tried a bunch of their stuff, you feel there's really only one dish which is worth having? Let's put them here. This isn't the same as just saying that your favorite item at a particular restaurant is x or y. I'll start, and please, remember these are just opinions.
1. The Noodle House, rte 1, North Brunswick for LOBSTER PAD THAI
2. Wildflowers, New Hope PA, for LARB GAI (They have a strange, multi-cuisine menu!)