I'd kill a certain person that I won't mention the name of.
How? I haven't decided yet, but I have a few ideas in mind.
Why? Because I can. He's a challenge due to the high level of risk involved. That's what makes it so damn exciting.
There is a possibility I'd get caught, but I know how to cover my tracks for the most part. Though, this is a little bit more of a tricky situation because the risks are much higher, but I really REALLY would love to do it.
If I desired to make a name for myself, I'd target someone famous. Targeting someone famous pretty much lets you piggyback their fame, such as Margaret Mary Ray who is known for having stalked David Letterman.
I don't however, and I see little I'd gain from someone's death that I could gain just as easily as setting the scene to never see said person again. It strikes me as a wasted effort until all other options are off the table.
If you want some gain and someone famous, you can and invest in company A. wait a few weeks, so you look like just another regular investor and then take out the CEO of company B. That way, when the market speculation collapses Company A, their rivals, will rise in stock value. Profit. Just saying.