Can I disable the lighted Apple logo on the back of my MacBook Pro?
Solution 1:
Nope.
The glowing Apple on your MacBook Pro is actually illuminated by the backlight of your screen as well. So you can't turn it off as long as you have your screen lighted on. Your best bet is probably to put a sticker on it.
Solution 2:
I don't think this is possible. The Apple logo (at least on a MacBook Air and the two previous Apple laptops I owned) is lit by the backlight of your screen. (Try changing your screen brightness, and you'll see the brightness of the Apple logo change as well.) I think covering it would be your only option.