Alliance for Inclusion in the Arts:
Promoting full diversity in theatre, film and television. Also in 2013, if you are invovled in the creative arts , there are several programs including grants, residencies and call of papers They also have a great resources page: http://inclusioninthearts.org/resources/

Wanna go to a Broadway or Off-Broadway show?
TDF (Theater Development Fund) is an organization offering discount theater tickets. Within their ticket services is TAP (TDF Accessibility Programs), where you can get seating according to your specific needs/eligibility at discount rates. From my understanding, the TDF organization offers performances with an ASL signer at certain Broadway and Off-Broadway theaters.
You can contact TDF at:
TDF Theatre Development Fund
520 Eighth Avenue – Suite 801
New York, N.Y. 10018-6507
1-212-912-9770, info@tdf.org

Need someone to sign/ASL for you at a theater, museum or film?
HANDSON is the place to contact.
Hands On Sign Interpreted Performances Inc.
159-00 Riverside Drive West, Suite 7F
New York, NY 10032
Voice: 1 (212) 740-3087, TTY callers please use relay - 711
FAX: 1 (212) 740-4157, info@handson.org

Lincoln Center's Programs & Services for People with Disabilities:
PSPDDepartment@lincolncenter.org
212.875.5375 (Monday through Friday 9:00 am–5:00 pm)

Lincoln Center Visitor Guide
Lincoln Center Venues & Accessibility
NYC Ballet / David H. Koch Theater Accessibility
Metropolitan Opera House Accessibility
NY Philharmonic / Avery Fisher Hall Accessibility
Lincoln Center Theater Accessibility page
Lincoln Center Film Society Accessibility
Walter Reade Theater Accessibility
Chamber Music Society
David Rubinstein Atrium
Josie Robertson Plaza
Damrosch Park

Museums

A lot of folks do not realize that several city museums have a 'pay as you wish' policy...in other words, you can pay as little as a penny per person admission to the museum's 'general exhibits'. but not to their 'special exhibits'. This policy is not in the forefront or located near where one pays admission. If you prefer to pay their suggested admission rates, you can, but if you're on a budget and hope to see other sights, then consider the 'pay as you wish' policy.
Metropolitan Museum of Art
Museum for the City of New York
American Museum of Natural History
National Museum of the American Indian (Smithsonian Inst).
Brooklyn Museum
The Cloisters- Part of the Metropolitan Museum of Art, I'd suggest planning your trip to go the route of the MTA's M4 bus. Going via subway will put you in a position of climbing lots and lots of stone steps up. The M4 bus leaves you right in front of the museum's main entrance. This museum is somewhat limited accessibility-wise. They do have a van for people who use wheelchairs or who have mobility impairments. Call for info or a van: 212-650-2211.

Here's a museum resource:
Museum Access Consortorium
MAC membership is free.
T: 1 (212) 879-5500 ext.3561, TTY: 1 (212) 570-3828, access@metmuseum.org