The red dragonfly is striking. We have a similar, orange-red one that inhabits the freshwater tidal marshes of the Chesapeake Bay, but I have not had the occasion/perserverence to photograph it. Its a tough challenge to catch these guys "on the wing". That is why I prefer plants for my macro photography.
Garrie
http://www.pbase.com/garrie_rouse/flora
PS - I'm thinking your second photo is of a damsel fly (a close relative of the dragon fly), but I'm no expert.
PSS - Your pictures from Laos are colorful and dramatic. I expected to see more dragonflies when I went to your gallery, but was duly impressed with the diversity of your subject matter. Were they all taken with the G3?