My favorite technique is summed up in Daniel Negreanu's Article named Nutbar.
I just love going to a lower limit and doing this.. it also helped my game a lot, I call is constructive tilt (I think daniel actually said that in his article too lol).
Just read the article you'll understand, heres a link
http://www.fullcontactpoker.com/cpar...s.php?id=00022