Dunno what it's like in the US, but in the UK I hate...
Gits that go out and buy a case premodded in the tackiest of ways (eg: LianLi PC60 with window or with the fishtank panel)... who then stick a few lights in (usually 1) and then go "yes, I've modded my case... it's ace.... u should see it."
NO YOU HAVEN'T. IT CAME LIKE THAT IN THE SODDING BOX. YOU'VE DONE NAFF ALL!
And then there's the "how do I cut a blow hole"
Is it just me or is it blatantly obvious that you draw the circle the right size for your fan, mark the screw holes, drill out the holes, cut out the circle with anything capable of cutting metal! I'm sure 80% of the world were born without an ounce of common sense!
Think the worst one has got to be when they come to the shop with a case and give it the "can u put me a window in this" thang
To which I reply "yeah, u got your design?"
Their reply... "er no, don't know what I want" (

) or even worse... "can u do me the same windows you have in your case" (

)
Grrrrrrrrrr...... PLENTY of ppl have had their heads chewed off fer that one!