The PSP's firmware update to 3.80 in combination with the PS3's update to 2.10 allows owners of both to play all PS One games via remote play on the PSP. This feature went largely unnoticed, as Sony did not officially announce it through their update page, listing Internet Radio as the primary "new" feature to be included in the latest system update.
Remote play of PS One titles was not officially mentioned in either update but the existence of the new feature had been confirmed.
The new feature rewards those gamers that decided to keep their old PS One titles around the house as they can now play them on their PSP without having to worry about paying extra to download them from the PlayStation Store and then transferring them to their PSP.
But to those that have already purchased PS One titles from the PlayStation Store, the update allows them to those games remotely from the PS3's hard drive, rather than requiring them to be downloaded to a PSP memory stick.
Compatibility issues remain unknown with regards to specific titles, but users will need to reassign the controls in many games to account for the PSP's lack of two analog sticks.

WOW....... thats a pretty nice feature
w00t. I read you get better gameplay (no lags or disruptions) if you play slower paced games such as rpg's or puzzle games! You may get problems with sports or fighting games?!?! But this is a great feature anywayz!
Excellent feature! I wonder if they'll be able to make the PS2 games play remote as well. Why not? We can already play Lair that way.
psn id: gingo... this could possible be the greatest feature even to be added to the psp, its awesome how you can just have a ps1 game in your ps3 and play it anywhere around the world
This has been a great upgrade. Looks like sony's kicking it to high gear. Now they need to put all efforts on pushing out software.
you know what this means, FFVII portable!
I can do this without 3.80. All you have to do is upgrade the PS3 to 2.10. My PSP is still at 3.72
dont care that much but shows how powerful the ps3 is
this is an awesome feature, im very pleased, now only if i had some PS1 games. sigh. but good updates for PSP and PS3 this week, also the new free media manager download is much appreaciated.
Downloading....
That's awesome but, can't Sony Playstation remotely utilize the PS eyetoy to work with the PS3 eyetoy remotely....That would be great if they can.....So, I can see what's going on while i'm at work ....To check what my roommate is up to!
Sweet, im gonna have to try that out now :)