I was here for the Brood X emergence in 2004. It was interesting, actually...maybe a bit annoying an noisy, but at the same time kind of cool to be honest. That May was very warm and I think they actually emerged and then disappeared more quickly, peaking around Memorial Day weekend. They definitely got all over the place. I recall playing in a softball game out in Virginia in the league I play on, having to practically swat the damned things away while in the outfield!
Here's a photo I got at the time (very low res digital camera back then, LOL!), of a cicada emerging from its shell. I always found it neat how they come out white with black "eyebrows", before they dry and harden into the normal black color with the clear-orange wings.