Director Displacement: This film had two credited directors (Danny Boyle and Loveleen Tandan) but Boyle got all the credit. Reportedly, Tandan directed much of the flashback sequences with Boyle while all of the present day scenes were done by Boyle himself. Tandan also was a casting director on the film.
Romance on the Set: Dev Patel and Freida Pinto became a couple while filming Slumdog Millionaire. Pinto was engaged to someone else at the time, but broke it off.
