Yeah, I'm interested to hear Acidman's headshot method. My 'method' for headshots is to simply hang around Sunshine Autos and pop Vercetti Gang heads like crazy. There's always loads of 'em hanging around in groups and it's easy to head 5 or 6 headshots at a time or maybe 10-15 if there's a few groups around, and then clear your stars, drive away and come back for the same again.
I've never had any real 'method' for killing, but Brown Thunder, slaughtering Vercetti Gang guys around Sunshine Autos and driving around Little Haiti killing Haitians and random civilians are my favourite methods of causing mayhem and having a laugh in Vice City.
KM.