Various members of the IGN Boards have spotted Logan's Shadow demo UMDs at GameStop/EB Games. The demo will allow you to get a taste of what the media got to play at Sony's Gamer's Day. Lucian04 from the forums noted that "they just gave me the demo when I asked for it. No pre-order involved." You may want to do the same.
The incredible graphics, sweet new control options, and fantastic presentation all have us thinking Logan's Shadow can become PSP Game of the Year. Rush to your nearest GameStop, hassle an employee, and tell us what you think of the demo.
[Update: You can get a free UMD from Sony at the official website.]