I've just added a new section within the Travelfish forum covering motorcycing in Asia. We're seeing more questions on this topic and I thought it deserved it's own section.
Here are links to a few stories on the site worth reading:
The Death Highway
Southern Laos by scooter
Motorcycling northern Thailand -- the Chiang Rai loop
Good motorbike route in Thailand
Buying a touring motorbike in Vietnam
General advice on motorbiking in Vietnam