The first North American PSone titles have hit the PlayStation Store, which you can now play on your PSP. As you can see in the above pic, Tekken 2, Crash Bandicoot, Coolboarders, Hot Shots Golf 2 and Syphon Filter are the first available titles.

Titles range from 157MB (for Hot Shots Golf 2) to 535MB (for Tekken 2) with each setting you back a cheap ass $5.99 (US). These are currently only playable on your PSP and require a PlayStation 3 for the download, but expect updates soon to make them playable on the PS3 and downloadable from the PSP. Michael McWhertor

PS1 games for PSP (US) [E-mpire Forums]