Best Picture - Spotlight

source: oscar2016awards
L to R pictured
Stanley Tucci, Rachel McAdams, Mark Ruffalo, Michael Keaton, Liev Schreiber

Update from January 17, 2016 entry:
Congratulations to Thomas McCarthy for his Oscar, Best Original Screenplay for "Spotlight", which also won Best Picture.

Michael Keaton has now been in 2 Best Picture films (2014 for "Birdman") in the past 3 years.