Sommer became one of the top film actresses of the 1960s. She made 99 film and television appearances from 1959 to 2005, including A Shot in the Dark (1964) with Peter Sellers, The Art of Love (1965) with James Garner and Dick Van Dyke, The Oscar (1966) with Stephen Boyd, Boy, Did I Get a Wrong Number! (1966) with Bob Hope, the Bulldog Drummond extravaganza Deadlier Than the Male (1966), The Wrecking Crew (1968) with Dean Martin, and The Wicked Dreams of Paula Schultz (1968); in each of these films she was the leading lady.