Back in Chicago. Next time must have data plan for tweets on the go! Farewell #London # I checked in at Christ Hospital and Medical Center (4440 W 95th St) on #Yelp http://bit.ly/ate6f0 # I just used #Shazam to discover Dead American Writers by Tired Pony. http://shz.am/t52500173 # At work. Wait, wasn't I just in #London Vaca officially over. #Chicago # RT @smith_blarney "Underwear Invention Protects Privacy At Airport http://bit.ly/bsYz44" Would someone please field-test this? #TSApornscan # O'Hare was easy Saturday; short lines at Immigration as we arrived at 725pm. Curbside by 745pm, Mike at www.oharetaxico.com there in 5mins #…