Tom Cruise surprises his old friend Brad Pitt at the European premiere of "F1" in London, as the movie's leads reveal how they trained to drive like Formula One racing drivers.

It's been 31 years since Tom Cruise and Brad Pitt last worked together on the big screen, co-starring in director Neil Jordan's 1994 gothic horror, Interview with a Vampire. And it's been 24 years since the America: A Tribute to Heroes benefit concert, the last time the pair were spotted palling around on a red carpet together.