My preference is just continually chatting to the batsman, whether or not he wants to talk to you, slowly questioning his technique, gameplan, attitude, concentration... and all of a sudden he's not thinking about batting any more and he's out.
Best moment last season was keeping wicket - with five overs left, Ashburton needed 24 to win and their number six had just crossed 50. We were short on ideas, and seeing as it was 8.40pm, short on bowling as I wasn't allowed to bowl anyone but spinners. I noticed a big wire net above the hedge beyond the straight boundary, and asked the batsman, who was about 17/18, whether anyone had ever cleared it.
"Yes, loads."
"Have you?"
"No."
"That'd be a nice way to finish it off, wouldn't it?"
He came down the track to the next ball, and it skied excruciatingly between the bowler and mid-off.
"Unlucky Owen." I shout to the bowler, before chatting to the batsman again. "Never mind mate, nearly got there. Maybe next time?"
The next ball, he's off down the pitch again, and misses the ball entirely, leaving middle and off to be disturbed. We won by four runs.