One of the threads was discussing why Tempus isn't dead yet.
I'd like this thread to consist of various writers lining up to do Tempus in, but there's a catch: he's a slippery villain so after you kill him he has to still be alive for the next writer. (You can shoot him and have him rescued by his future self - he's a time traveller, it can happen). You can blow him up but jump into time just in time.
I think of it as sort of like the Pink Panther movie where all the world's assassins are gunning for Kluseau (SP?) but he's just too lucky to die.