One of my most memorable moments in radio happened in August of 2000 when I joined Sting on-stage at (then) Smirnoff Music Centre in Dallas during soundcheck for a duet of "Desert Rose." I refer to it as the "Sting-Along" Unfortunately (or fortunately) there is no video that I'm aware of, only pictures.
Today the legendary bass player and frontman for The Police turns 72 and in his honor, check out this classic documentary from 2008, The Police Better Than Therapy - Living The Police Reunion