I've got two from Half-life 2:
1. I was in the sewer area in Route Kanal where you have to run over the loosely arranged bridge of rubble. I jumped down at the end of the route, but I must have tipped the board I was jumping off of, because it tipped over and beheaded me. I've never been killed by game physics before.
2. Another time I was using the gravity gun to shoot explosive barrels at the cops. I held onto my last barrel a bit too long though. A cop shot the barrel immediately killing me.
1. I was in the sewer area in Route Kanal where you have to run over the loosely arranged bridge of rubble. I jumped down at the end of the route, but I must have tipped the board I was jumping off of, because it tipped over and beheaded me. I've never been killed by game physics before.
2. Another time I was using the gravity gun to shoot explosive barrels at the cops. I held onto my last barrel a bit too long though. A cop shot the barrel immediately killing me.