Definition of 'maniacal'. maniacal (mÉnaÉªÉkÉl ) If you describe someone's behaviour as maniacal, you mean that it is extreme, violent, or very determined, as if the person were insane. He was almost maniacal in his pursuit of sporting records.
Throughout his career, Clooney has won two Academy Awards, one for Best Supporting Actor for his role in Syriana and one for Best Picture as one of the producers for Argo, as well as a BAFTA and a Golden Globe.
Clooney was designated for the position by UN General Secretary General Ban Ki-moon. and will join eight other well known individuals to campaign for UN causes. (Getty Images)more pics Â» Nina Clooney (Getty Images) Nina and Nick Clooney, George Clooney's parents, are not at the Oscars tonight. They're watching the show tonight from their own home in Kentucky and crossing their fingers and toes that their famous son will be a winner tonight.