Greer played "everyman" roles, from bus drivers to preachers and shopkeepers, in nearly 100 movies and hundreds of TV show episodes. He played a prison guard in the 1999 movie "The Green Mile."
He played storekeeper Mr. Jonus on "Gunsmoke" and also was the minister who married Mike and Carol Brady in 1969 on TV's "The Brady Bunch."
Most of his work was in supporting roles, but Greer told the Albany, N.Y., Times Union in 2000: "Every character actor, in their own little sphere, is the lead."
Brother Richard, Randy Turner and The Man From Harvard share the point.