Herzlichen Glückwunsch and Compliments to Albert Fert and Peter Grünberg!
Update (Oct 11):
Here are two references to somwhat more technical expositions about giant magnetoresistance (GMR), albeit one in German, the other requiring a subscription:
- The American Journal of Physics has, presciently, adressed GMR with a resource letter: Resource Letter STMN-1: Spin transport in magnetic nanostructures, by Kristl Hathaway and E. Dan Dahlberg, American Journal of Physics 75 (October 2007) 871; doi: 10.1119/1.2757627 (subscription required)
- The German Physical Society has presented the Stern-Gerlach-Medaille, its most prestigious award in experimental physics, to Grünberg earlier this year, and the Physik Journal (the German equivalent of Physics Today) reports the awardee's talk at the spring meeting of the DPG, Kopplung macht den Widerstand, by Peter Grünberg, Physik Journal 6 (2007) No 8/9, 33.
The PDF (in German) is for free.