LaBeouf believes method acting is behind erratic behaviour

Shia LaBeouf blames his erratic behaviour on method acting.

The 28-year-old star claims he was simply preparing for his role when he clashed with Alec Baldwin, 56, on the set of Broadway production 'Orphans', insisting this was also the case when he smacked actor Alan Cumming's backside at a performance of 'Cabaret'.