*butts in* I've always worked on the assumption that he recovers quickly from death (I love being able to write that), but minor injuries take an approximately normal amount of time to heal. So if he breaks his leg, he's out for the time a regular person would be, but if he breaks his neck, he's out for a short time and then recovers.

The recovering from dying seemed to get longer as the series went on - Suzie shooting him in the head took under a minute, Owen doing the same took a couple of minutes. So maybe it's got something to do with how healthy he is when he dies? He's not exactly on top form when Owen shoots him.

But yeah - regular cuts and bruises and stuff? I reckon they're the ones that stick around.