Great post, Even the media glossed over the kindness that the Thai people extended to foreigners during that Tsunami period, also, when the Airport was taken over during the change of Govt (choosing my words carefully due to forum rules) - Many Thai people helped those stranded at the Airport by bringing food, taking care of the children and generally also being helped a lot by the people occupying the Airport at the time who gave ration packs and ensured there was plenty of water to go around.
As for good farangs, in Pattaya I think more so in recent years, foreigners look upon other foreigners with suspicion. I got chatting to an Aussie bloke in a bar who told me that for every 10 blokes he meets, at least 3 of them have an angle of some description.
I think Pattaya can erode the kindness of people somewhat, but as @Nightcrawler said in his excellent post, Pattaya is somewhat of a bubble. I've seen some bloody horrific behaviour by farangs in pattaya, but on the flipside I've seen acts of kindness that go largely unnoticed, but they never go unappreciated if they're genuine acts of kindness towards a Thai.