NW has an $1800 C class (yeah, that's Business Class!!) fare US-BKK RT...you'll earn 40K STATUS miles, and about 65K total miles if you have NW/KLM high tier elite status.
outbond Dec 16-Jan 2
inbound Dec 23-Jan 9
book by Dec 2
7 day minimum (but starts at date of departure, so actually you only need 4 days 'on the ground')
I decided to side trip to Vietnam in order to take advantage of this eye-popping fare!
Check
www.nwa.com for more details!