This actor was cast in The Best Man and Invasion of the Body Snatchers.
The Best Man (1964 film):  The supporting cast features Edie Adams, Margaret Leighton, Ann Sothern, Shelley Berman, Gene Raymond, and Kevin McCarthy. Kevin McCarthy (actor):  He is best remembered for portraying the male lead in the horror science fiction film "Invasion of the Body Snatchers" (1956).
Kevin McCarthy