I have a stick haha. I started teaching when teachers were still able to hit the kids with their "special" stick (drumsticks, wooden rods, thin steel ones, rulers), so my co-teacher gave me one-- well, its a pointer, but the finger fell off one day. I would NEVER EVER hit a student, but they know when I'm holding the pointer I'm in charge and when I'm pointing the pointer at them, I'm talking to them. When a class gets really out of hand, I toss the pointer on the table like I'm not going to teach class anymore and it makes them really quiet. Then I ask them if they're ready to start class again... it doesn't get that bad very often though. Overall, class is more effective with the pointer. Instead of screaming "be quiet" just hit it against a table.
I used to end up punish the whole class (taking away games, making them write sentences) because of a few unruly students but now I know it's NOT the way to go. After seeing my classroom-management major co-teacher in action, I learned her trick: single out the bad kid. Call him by his name and tell him exactly what he is doing wrong and that he is disrupting class. It's direct (and maybe a little scary for the kid) but it works. It also really helps to know their Korean names.
Some teachers might disagree with the stick and brutal honesty (too intimidating, we should be friendly to the kids) but I think I have the control issue down pretty well and I'm not considered a mean/scary teacher at all. I smile all the time, so when the kids see me toss my pointer and frown, they know its time to be quiet.
Having said all that, the best behavior control is having kids like you as a teacher, keeping class interesting and fun, and making sure they know that bad behavior leads to a less fun class.