1. Try to fly an Asian carrier who departs late at night for SEA. For example, EVA leaves SFO at 1:00 am and gets you into BKK in the morning. I find that departing California during my regular bedtime makes the jet lag almost non-existent.
2. Take a drowsy-type of antihistamine like Benadryl. Keeps me sleeping for the first 5-6 hours of the flight.
3. Drink plenty of water and avoid in-flight alcohol.
4. Upon arrival, get some exercise (on morning arrivals). I usually hit the gym after checking in. The exercise and sweating re-sets my body clock.
5. I avoid doing an all-nighter on my first night. Some reasonable amount of drinking/hounding, but nothing excessive. The next day, I'm ready to rock.
5. My jet lag is normally the opposite -- I'm fucked for the first 3-4 days when I get home. However, last trip I took some melatonin on a recommendation and it helped immensely.
Good luck.
BHP