double feature

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A movie program consisting of two full-length films.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Two feature-length motion pictures being shown back-to-back in a movie theatre, with the understanding both may be seen for the price of a single ticket.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun two games instead of one (especially in baseball when the same two teams play two games on the same day)