When civilization finally crumbles and society is no more, movie fans should be well prepared. After all, Hollywood has been offering up visions of a post-apocalyptic world for years. Bora Barroso, a film student from Madrid, has compiled some striking images from these movies into a dramatic montage called “The World Of Tomorrow (A Tribute).” That’s a friendly, optimistic title, but this is mostly pretty grim stuff. Gray skies, abandoned cities, rusted-out cars, and hopelessly barren landscapes are the order of the day here. Marauding bands of flesh-eating zombies and/or super-intelligent apes are optional but preferred. Mad Max: Fury Road, probably the most colorful and eccentric of the recent post-apocalyptic films, is cited here several times. But that acclaimed sequel hardly has a monopoly on humanity’s bleak future, as evidenced by clips from The Road, The Book Of Eli, Children Of Men, I Am Legend, and other discouraging titles.