I saw this photo of this year's Nobel Prize winners: http://news.yahoo.com/nphotos/Nobel-Prize-Physics/ss/events/sc/100510nobelphysics
The photo was taken by Jon Super (www.jonsuper.com) for AP. I like the lighting, tonality, and shallow depth of field. I guessed that lighting was all ambient (with overcast skies), and it was taken with a 70-200 2.8. Anyway, I contacted Jon and he confirmed my guess (except that it was taken with a 1.3x crop 1D Mk3 not a 5D as I supposed).