VIDEO : Tom Cruise And Simon Pegg Had Fun On 'Mission: Impossible'

Tom Cruise and Simon Pegg admitted a few ?Mission Impossible? on-set antics on the ?the Graham Norton Show.?
Apparently they hummed John Williams ?Superman? theme during down time on set.
Pegg stated, ?We were shooting a car chase in Paris and it was me, Tom, Sean Harris, Ving Rhames and Henry. So it's a very cramped car??
Pegg continued, ?Henry took off and ran back to position one whereas we just drove next to him going, [mimics classic Superman theme song].