I've always wanted to do a winter tour of SE asia by bike. The first tourer I met was an old Dutch dude on a bent (first bent I ever saw as well) in the middle of Thailand. We sat and had a beer and he showed me his maps and stuff. Ever since then I've wanted to do it. If fact I started biking a little as soon as I got back. It would be more expensive than some places b/c you would want to tour in the in the winter (high tourist prices) to avoid crazy heat and you would probably have to fly a few extra times but SE asia is beautiful!! Everywhere you go there's are beautiful beaches and 5$ massages.