For insensitive types like me who expect their laptops and iPhones to survive multiple drops and bangs, Incase's Hardshell case is the way to go. Over the past several weeks of use, it's proven itself as the perfect accessory for withstanding my abuse. I've toted my laptop in a variety of bags using a few different modes of transportation and my computer has fared well. Granted, I haven't recently experienced one of my infamous slips but from what I can tell the sturdy case would stand up to a floor spill or a bump against an airline armrest.
Made from injected molded plastic featuring a rubberized "soft-touch" coating, the case comes in two parts that snap onto the laptop. With cutouts for all the appropriate ports, slots, buttons and vents, it's highly functional, only adding the slightest bit of bulk—I can even slip my form-fitting neoprene Côte et Ciel sleeve over it for extra safety. The case does prevent the screen from tilting back at extreme angles but I haven't found it to be too much of a hindrance.
Currently, MacBook versions are available in black, white, red and purple from Incase for $50. A MacBook Pro version will hit stores this May and will fit nearly all 15" and 17" MacBook Pros including the newest. (If you have one of the earliest Pro models from 2006, you may want to double check.)
Image via Notcot