The only one i'm sure of is Van Eyck's THE ARNOLFINI WEDDING - the guy who tosses the banana skin for his wife to sweep up. It's driving me mad too, because the images are so familiar: Cleopatra; the Andy Warhol reference with the Campbell's soup, in what looks like a 50s ad poster; the True Romance couple with the trademark teardrop on the woman's cheek, nicely updated with the man getting a black eye. I don't know the elderly couple at the end at all, but it's very familiar - I'd love to know the artist.