My players like having me run games because I have a reputation for rolling badly. 
When I GM'd the first time, I also had such a reputation. Well, things appear to have changed when I started GMing anew. In my first run, I set thresholds according to my bad dice. Result: hacker beaten unconscious by the IC (*looks at dice* 'ow ... biofeedback filter plus willpower, please. Good luck.'), mage beaten unconscious by a police dog (Doggie bites him for moderate stun damage, he flies into a rage, decides to blast Doggie with full force, fails to withstand the drain and promptly collapses).
Bye bad-dice-reputation. AHAHA
