I occasionally turn on the LEDs as I think it looks quite nice. I don't make them flash or set them to bright pink or something like that, but does that make me a tacky person with no taste who's trying to show off?
If you take a look at the Alienware logo on the back of the screen, you'll find that it's way more subtle than the huge bright white Apple logo. The only part of it which lights up is the slight gap which surrounds the logo and the two eyes, and it's fairly dim to boot.
Battery life, surprisingly. I can get around 4-5 hours of real world use out of my M11x/M14x, mainly because of the switchable graphics. I've had MSi etc gaming laptops which could barely eke out 2 hours while only surfing the internet over Wi-Fi.
Exactly what I was thinking, which is why I was confused as to why getting attention (bad or otherwise) from girls is something you consider. It's not even on the list of things I consider when looking at a new computer. If somebody is going to shun me based on how my computer looks, then it's not somebody I want to be associated with.