http://www.pockettv.com/
I upload movies from my digital camera/camcorder to my pc. I then have to fromat them to view on my AX. The process sounds compicated at first but after the 1st 2-3 tries, it's a snap.
I'm a new father and carry videos of my son around to show off. A whole lot more interesting than boring pictrues/slide shows.
Here's another link that I used to help me convert the video to play on my AX.
http://forum.pocketmovies.net/viewtopic.php?p=3415#3415
I'm sure there are a bunch of other ways to do this....but this works fine for me. Have fun!!!