There's still a lot of mystery surrounding Sony's NGP (PSP2). We already know that it's going to be the most powerful portable gaming system ever, but will it be able to play PS3 games remotely? According to a post on Hold.Start.Select, it might be possible.
If you are connected to Wi-Fi anywhere in the world and your PS3 is on standby at home, you can play the game in your PS3 on your NGP without the disk.
I'd probably file this rumor as extremely unlikely, yet very interesting if something comes out of it. I'm sure all kinds of rumors will continue to fly until the day we actually have our hands on the NGP.