HERO's a great system but it definitely has some quirks that people find amusing, distracting, or annoying.
One of mine is falling damage vs move-through damage.
HERO assigns a max falling speed (terminal velocity) of 60 meters per segment for 30d6 damage. Oof.
The thing is... a move through attack that impacted at 60 meters per segment (ie: a character using a movement power, a car, etc) inflicts strength + v/6. So a car with a 'str' of 20 inflicts 14d6 if it moves 60 before hitting you.
That's half the damage of striking the ground after falling the same distance in the segment.
Why? What makes falling so much more dangerous than being hit by a car travelling at the same distance in that segment? Or a hero strong enough to lift the Statue of Liberty (70) with the same action (14d6 + 10d6 = 24d6)?
(Open for discussion of anyone's specific quirk as well as adding your own.)