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How cool would it be to be able to play old Nintendo or Sega games on your PSP? Well, if you can find the game ROMs, you can play them, thanks to the PlayStation Portable homebrew community. I've picked what seems to be the best or most popular emulator for each of ten systems that can be emulated on the PSP. (Please note that these are links to exteral sites and are not official Sony products -- using them may void your warranty.)

The Ultimate Sony PSP Wallpapers Resource. Free Sony PlayStation Portable wallpapers downloads.

wide range of PSP games available for download

Even if you mostly use your PSP for gaming, why ignore its potential for other things? Transferring audio, image, and video files to your PSP's memory stick using a USB cable is a snap, and will let you listen to music or podcasts on the go, show your vacation snapshots to your coworkers, or watch the latest movie trailers downloaded from the web.

Even though the PSP is mainly a gaming machine, it also makes a great portable music player. You won't be able to fit your whole music collection on a single Memory Stick (though they get bigger and cheaper every day), but you can easily switch to new music once you know how to transfer the files.