If you're reading this blog entry, chances are, you're not playing with your PSP. Don't worry! "Virtual PSP," a Flash game, will allow you to pretend like you're playing your PSP on your computer. It's a very clever fan made homage to Sony's system that includes a clever take on the XMB, and a few UMDs as well.
Of course, you might also be reading this article from your PSP. Then, things get really weird. You'll be playing a game about playing the PSP ... on your PSP. Hmm. Be careful! This kind of logic can destroy the universe!