If you have an import PSP and have tried downloading MPEG-4 clips onto it, you'll know what an absolute nightmare the process is. Luckily, this site is coming to the rescue with PSP Video 9, a free downloadable app that - like iPSP - converts most PC video files so that they'll work seamlessly on your fussy Sony handheld. However, PSP Video 9 can also be combined with another package called Videora allowing you, "to download, convert and copy video to your PSP, automatically using BitTorrent and RSS technology."
And if you're interested in PSP videos, check out the fabulous Japanese site PSPunch - here you'll find a collection of short movies, submitted by amateur filmmakers and designed specifically to be viewed on PSP.