I know some kinda weird murder cases, as I'm a law student. Let's see...

R v Franklin. Some guy threw a box of merchandise (Like, tacky souvenirs I think) off of a pier, and someone was swimming underneath and got smacked on the head with the box and died.
R v Larkin. Some guy (It's always SOME GUY!) was waving a razor blade around so a woman walked into it.
R v Holloway. (Oh, R means Crown by the way) an electrician accidentally wired up a kitchen sink to become electrically charged and the person that used it got zapped.

S'all I can think of right now that were odd. Still... kinda embarassing ways to die.