While a plug for every computer is a near impossibility, plenty of outlets or a power bar goes a long way. I've heard of people who hog the lone plug, not for the electricity, but because it can spark conversation with that cafe cutie looking for power. Who knew you could geek out and hook up at the same time?
Some might even argue that a freshly pressed shirt, power tie, and tailored jacket are the key to greatness. Whichever way you look at it, you'll probably need one somewhere down the road.