Perhaps not the right place because it is not marketed as a colic remedy, but my wife's yoga ball does wonders. We just sit on the ball wile holding the screaming three week old and gently bounce. She *usually* stops crying about 20-30 seconds in. If you've got one lying around give it a try and let me know if it works for you.
The yoga ball has been a lifesaver!! My husband and I were running the vacuum pretty much constantly before someone suggested this to us, and it was getting to be a real headache (literally). The yoga ball is quiet and we can use it when we have people over, when we are watching a movie.... I just talked to my mom to make sure she has one at her house for X-mas. I think it is going to be key to surviving the holidays with the family!