Forget minmaxing, what has been your most FUN build and playstyle? [DAV ALL SPOILERS]

By now I think most people have discovered how overpowered mages (permanent invulnerable through iframes and unlimited mana) or the ridiculous damage of infinite exploding dagger rogues.
But considering the difficulty sliders really don't impact anything at all, no achievements etc, there really is nothing stopping us from tuning things down and playing for fun.
With that in mind, what have been your most FUN builds and play styles?