One of Mac's last public appearances occurred at a rally for Barack Obama in July. (He's shown here at the Billboard Music Awards in 2001).

Two Mac movies have yet to be released, the road movie "Soul Man,'' where he and Samuel L. Jackson play the two remaining members of a 70s soul band (due out in November), and 2009's "Old Dogs,'' starring John Travolta.

Photos: Actors who had films released after their death