I read the last one, A GENTLEMAN’S GAME, over the summer on a couple of flights and enjoyed the heck out of it. And, of course, there’s a whole series of graphic novels you might be interested in. I reviewed all of them last year.
If you’re not into British spy stuff, I’d also recommend the Atticus Kodiak series of novels that Rucka did first. The sixth book in that series, PATRIOT ACTS, is due next fall.
(Thanks to Randy Lander for the reminder.)