Terrorism.
I like setting up buildings to blow, and then making sure cops die, or at least gets themselves damaged in the explosions.
For example, the /callattack building has enough area surrounding it for an Infernus to pass through. When there's a cop, or four, on me, I take three or so rounds around the place and leave. It's successful almost every time, and kills the cops/their cars instantly.
I also like a little roleplay and planning/mind games in my terrorism acts/chases. Parachute jumps after /blow'ing planes and such. Brings that movie effect to the game.
The best so far was what I call 'The Perfect Get Away'. Had a bought boat at the Sherman Dam, rigged the place to blow, and jumped off of the bridge right into the water leaving them kittens stuck there. Good enough a plan for me!
Such plans aren't successful all the time, not half the time without going through and practicing your plans. I died taking the same jump another time, resulting in an admin jail.
Pretty risky stuff, but when perfected, it's a work of art.
Don't try this at home kids!