I like to think that even the hardest of the hardcore PC gamers—even the ones that feel the need to jam all of their words full of numbers and "X"s—aren't hopeless nerds. But walking into a person's house and seeing a PC case that looks like a self-contained rave can do more damage to their reputation than a pair of taped-up horn rims and a pocket protector ever could. It's one thing to cut up your case and add some custom options, but buying one of these hulking, neon beasts off the rack is unforgivable under any circumstances.

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XCLIO ATX Full Tower Computing Case $109
You can't deny the importance of a good fan, but that thing looks like it would be a better fit under the Hoover Dam. At full power it cranks out "only" 32.1dB and will probably blow any tiny pet that walks in front of it clear across the room.
More info here