The 'Opie & Anthony' radio show on SiriusXM satellite radio sparked one of the all-time greatest "when stars collide at SiriusXM" moments when they booked AC/DC frontman Brian Johnson (in to talk about his new book 'Rockers And Rollers: A Full-Throttle Memoir') and critically acclaimed actor Malcolm McDowell (promoting the 40th anniversary of 'A Clockwork Orange') back to back for interviews.

Who knew the rock god and master thespian are old friends who collaborated years ago on an unreleased musical? Opie, Anthony and Jim Norton witnessed the reunion of the century as the guys reminisced about the old days, tell hilarious stories and even burst into song, live on "Opie & Anthony".

Listen to a couple of clips from the program below.

В