I was walking down the street somewhere in Bohan and accidentally pushed some random pedestrian. The guy staggered for a few steps, went face first into a telephone booth, stumbled on the curb and faceplanted into the bumper of a speeding truck.
I stood quietly on the walk examining the mayhem and thought: "Naaaaah I was gonna smack the shit out of him anyway."
But the absolute gem of the freak accidents produced by the physics engine was when I was having Nico take Kate out one night. So Nico picks her up, nicks a brand new Sabre GT and as they are speeding down the walkway in the middle of the Algonquin Bridge (coupla' stars on them, mowing down lamp-posts and unlucky civilians, Kate screaming "YOU'RE CRAZY! SLOW DOWN! SLOW DOWN!") suddenly a flaming SUV launches over them from the street above. As I change the view to see what the fuck just happened three police cruisers fly over their heads and crash into the wrecked SUV. The car explodes sending the police cruisers flying.
However also the Sabre has caught fire and I decide I should save Nico. He jumps out of the car and slams into a wall while the blazing vehicle shoots down the stairs in to a tunnel in the end of the bridge. People are screaming and then a thundering blast echoes from the tunnel. The game announces that Kate has died. My first thought was "Oh shit, I forgot all about her. So much for dating."
Then I realize I got no more heat on my tail. So Nico is left standing on a bridge in the middle of a mess of twisted metal and mangled corpses which used to be three cop cars and a SUV, he just sent his soon-to-be-girlfriend to a certain death in a flaming car and by making this all happen he somehow magically evaded a three star police pursuit. My friends who had been watching all the time were laughing their asses off.
I felt like I should earn a hidden achievement or something...
So yeah, death is always great fun. Also I've lolled a thousand times when I've angered some punk from the street to start a fight with me and then ran past a police officer to get the guy arrested.