What was the last movie shot in black and white?

Guy and Madeline on a Park Bench (2010) was one of, if not the last black-and-white movie. It can be assumed more will follow. The movies Good Night, and Good Luck. (2005) and Sin City (2005) are two recent black-and-white movies that garnered widespread appeal in the U.S.

See Sources and related links for a list of post-1960's black-and-white movies.