86. You think any DM that can't defeat his players' characters with three non-classed kobolds, a rubber band, and duct-tape is a hack.
87. You design highly stylized dungeon such that no one could possibly live there based on the traps, room sizes (Ancient Red Dragon in a 10' x 10' room, anyone), and layout, but justify it by saying that the entire dungeon, from the air, resembles an elvish letter from the Simarillion or something along those lines.
88. Lay out plots and political intrigue that would leave Machiavelli scratching his head, and then kill off all the players for missing all the "obvious" solutions.