mine is arranged in 4 floor-standing, 4-layer, bookcase-type, wooden DVD cases w/ glass doors and 1 stack-type(60s) rack...the discs are arranged by a weird combination of genre:
1. action (indiana jones, leon, top gun etc)
2. comedy (history of the world, top secret, hotshots etc)
3. drama/non-fiction (almost famous, beautiful mind, jerry maguire etc)
4. fantasy/sci-fi (harry potter/s. LOTR/s, starwars etc)
5. gangsters (godfather/s, untouchables, scarface etc)
6. horror (last house on the left, evil dead, exorcist etc)
7. kiddie (incredibles, alladin, finding nemo etc)
8. magic (david blaine, criss angel, david copperfield)
9. mind-messers (memento, pi, donnie darko etc)
10. music (sting, boyzIImen, mtv unplugged)
11. superheroes/comicbook ( batman/s, superman/s, x-men/s etc)
12. twisted (steve-o/s, faces of death/s, banned from tv etc)
13. vampires (inteview, dracula/s, near dark, underworld etc)
14. war (saving private, apocalypse now, pearl harbor etc)