Darren at Geeky Traveller turned us on a couple of interesting items regarding that damn jet lag.  First an awesome quote by William Gibson from Pattern Recognition regarding the unavoidable pain of jet lag.

Her mortal soul is leagues behind her, being reeled in on some ghostly umbilical down the vanished wake of the plane that brought her here, hundreds of thousands of feet above the Atlantic. Souls can't move that quickly, and are left behind, and must be awaited, upon arrival, like lost luggage.

Secondly, it appears that bright light and melatonin can reduce the effects of jet lag significantly. 

 Lastly, we've also heard good things about the anti-jetlag diet, which involves preparation for a trip using days of feasting and fasting.