I actually liked Jason X...bad acting, good killing and a ridiculously jacked Jason = a good Friday film!
Most memorable scene? Hmmm...there are a few. I'd probably have to go with New Blood when he starts getting his ass handed to him by Tina.
Between squeezing the mask till it shattered on his face, sending a TV upside his head, choking him with a light cord and droping him through a flight of steps...you see one thing that you never saw Jason do before: Get frustrated with a victim. He pulls the cord off from his neck, throws it down and huffs and puffs for a minute...that was pretty cool.
I always thought in VI when he stood in front of the VW and popped the tire through the fender, that was pretty "classic" Jason.
I also have a machette autographed by Kane Hodder