An upscalish, sit-down Chinese restaurant on 9th Ave, just south of the theaters is Chi Restaurant and Bar:
Danji on 52nd between 8th and 9th has very good Korean. I especially recommend their shrimp and scallion pancake. Sticking to midtown places where you can comfortably sit, Don Antonio on 50th, also between 8th and 9th, has good pizza but their crusts have been underdone lately. They also have good salads and appetizers. Further down the block (toward 9th) is an old school French restaurant with a certain faded charm. You can get calf’s brain, and cassoulet, and bouef bourguignon there, and follow with a soufflé. The food isn’t outstanding, but the combination of atmosphere and food is interesting.
On the other side of 8th on 51st (opposite “Wicked”) there’s the Indian restaurant Saar. Not everybody on this board likes it, but I am a fan of their kebabs (especially chicken).