I always knew that Robin Williams could do more than make us laugh.I knew that if he wanted to,he could scare us to death.Williams' turn as the loner willing to do bad things all in the name of right is done with dead on precision.There was always a versatility beneath the comedic improvisation we know him for.Williams executed this role with flying colors.So well,in fact,that I often forgot he was merely acting.While the supporting cast has their moments,this film is all Williams.His character is comparable to a certain deranged cab driver played by Robert DeNiro all those years ago.Though DeNiro's performance will never be topped,Williams work here ranks right up there.Well worth watching