heavy weight

Haven't seen this be done very often. But I saw the other day some guy who was pretty jacked was doing standing overhead presses and he was doing some pretty heavy weight up to 200 lb. How many you incorporate this into your workout and should I be doing the same thing. I thought about asking...

IDK why i cant make a poll, anyway. i wanna know if you guys think weight is more important than form or vice versa.. Which one do you think result in best and fastest muscle growth. VERY HEAVY WEIGHT = BAD FORM HEAVY WEIGHT = SOME MOMENTUM MED-HEAVY WEIGHT = STRICT FORM LIGHT-HEAVY...