Authentic Szechuan/Hunan recs?
Szechuan Gourmet. The spiciest I've found in Manhattan. Get anything with 3-4 chili peppers next to them on the menu, like the mapo tofu, braised [insert meat here] with napa and chili, dumplings in chili-soy, or cumin lamb. Great. I live right next to a Grand Sichuan and prefer SG's food.
My neighborhood standby is Wu Liang Ye on 48th St (try the cold conch and crab dishes.. yum) and Ollie's is surprisingly authentic despite its chain-status.