1. People that takeover the weight room (Bench, leg press, Lat PD, seated row, and a few dumbells all at once)
2. Not re-racking
3. Dancing between sets (I am not kidding

)
4. Sloppy form just to move heavy weight
5. Women who are afraid to move up the weight because they don't want to get too big
6. Everyone and their mother drinking 'Vitamin Water'
7. People who stay at the same level of fatness and have been at it almost everyday for years.