VIDEO : Alan Rickman Says 'Harry Potter' After Inhaling Helium on 'Tonight Show'

Alan Rickman stopped by The Tonight Show on Tuesday to settle a score with Jimmy Fallon.
The director and star of A Little Chaos confronted the host about the impression he does of him ? particularly about his " Alan Rickman-off" with Benedict Cumberbatch back in October 2013.
Rickman said the helium-filled balloons were Jimmy Fallon truth-telling machines.
After trying very hard to get Rickman to say "Harry Potter" in a higher pitch, Fallon explained the impressions started because he and benedict both realized they were fans of the director.??