The Clock

Films used in Christian Marclay's The Clock, the world's longest supercut.
The Clock uses excerpts from throughout film and television history. Television series aren't listed here, but the ones I know of are: Alfred Hitchcock Presents, Suspicion, The Twilight Zone (original series), The Avengers, Mission: Impossible, The Prisoner, Captain Scarlet and the Mysterons, Columbo, The Twilight Zone (1980s revival), Matlock, Quantum Leap, Twin Peaks, The X-Files, ER, Sex and the City, Murder Rooms: Mysteries of the Real Sherlock Holmes, The Office (UK), 24, The Wire, Agatha Christie's Marple, Extras, Prison Break, Dexter, and Breaking Bad.
This list isn't comprehensive and mostly comes from The Clock Wiki, but additions are welcome.