I just watched Highlander, which I haven't seen for who knows how many years, over a decade at least. Didn't really hold up quite as well as I'd hoped, but not bad. But this sequence of events really puzzled me.

Forensic investigator learns that signature matching places Connor McLeod hundreds of years old.

Forensic investigator confronts Connor McLeod regarding the dead person he claims to be.

Connor McLeod reveals his true identity and proves his immortality by stabbing himself.

Sex scene.

What? ok, it isn't defying known physics like Transporter 3, but still. "Oh my god, he's immortal! That is SO hot!"