It's been mentioned a few times already, but, yep, first image that comes to mind here:
A very memorable image, although in some contexts you might get screamed at for "spoiling" the ending. I love so much about that remake. Phil Kaufman gave cameos to Don Siegel and Kevin McCarthy, director and lead actor of the 1956 version. The Amazing Grace scene is also a beautiful depiction of hope renewed and then swiftly dashed. All this and Donald Sutherland and Leonard Nimoy, too.
Pod people are a little underused in fiction, but Edgar Wright's The World's End is a good humorous take on the notion.