Trigun - Entire series complete - OK it wasn't all in the one day, but over the past week i've watched a disc a day(bar now, where i watched the last 2 together) and it was one hell of an enjoyable experience. I can see why people love it so easily. Sure the animation is a little dated now, but it takes nothing away. The action was fun, in a way that i feel trigun could only do. Definitely one to watch if you haven't already, and don't be put off just because the series is a little dated now. Oh and before anyone suggests, i have seen Badlands Rumble already, saw it at SLA a couple years ago, damned nice too.
I was considering reading the manga after this(both normal and maximum) but i hear they basically re-iterate the anime, just with a few differences. So i'll still consider it, but put it to one side for the time being.