Man, this question takes me back to my childhood...
I remember a really mediocre Star Wars: The Phantom Menace PC game that I found feindishly difficult but actually quite compelling at the time I was playing it. I remember the stage where you're at the arena on Tatooine and everybody is watching the race while you're playing as Qui-Gon Jinn and are supposed to be doing some monotonous fetch-'n-find quests. I thought to myself, why not use my Jedi powers to be a huge dick? So I started lightsabering everybody in sight into tiny bits and chucking thermal detonators into the bleachers until the arena guards were finally able to finish me off.
Oh yeah, and I also killed R2-D2 and C3P0 a bunch of times. It was funny; after R2-D2 blows up, C3P0 begs for his life and starts hobbling away like a cripple. And if I'm not mistaken, he wails "NOOOOOO!" when you chop him in half. Awesome.
In retrospect, that was probably the most fun I've ever had being a dick in a video game. That game was so broken... you could win the final boss battle against Darth Maul just by force-pushing him into that giant hole (it was virtually impossible to beat him with your lightsaber anyway). I need to find out what I did with that game; think I might have sold it during a garage sale or something...