K an awesome thing all u people should do is assign hotkeys! i dont know howmany people there are who dont assign hotkeys to their buildings and men but omfg is it ever useful! u can go from ur factories to a battle in less than a quarter second.. heres how i do it

Beginning of game:
1 = Command center
2 = Scouting SCV
3 = Building SCV, Vultures
4 = Building SCV, Tanks

Middle Game
1 = Command Center - Comsat
2 = Biggest army
3 = Minor (harrassement army) and Dropships
4-8 = Factories (i have more than 4 factories usually)
9-0 = Comsat

End game
1-4 Comsat (sometimes)
3 = Big army
4 = Minor army (dropships)
5-0 Factories

*If you dont know how to assign hotkeys press CTRL + # on selected units to see

My sig won't show =/