>Hold a frame over the open hive with a frame holder in your left hand
>and strike an end bar sharply a couple of times with the heel of
>your right hand and most of the bees will fall off. 


Or without a frame holder use CC Miller's technique:

Hold a frame resting the "ears" on your bent forefingers (hands shaped in a 
loose fist). Quickly lift it with an abrupt action and let the frame hit your 
poised thumbs. Do this 2-3 times in rapid succession, bouncing frame between 
fingers and thumbs. the bees will pop off the frame into the hive.

Cesar Flores
Colorado USA