Music, video (but not DVDs or Bluray) can be streamed. Certain PS3 and PSN games can be streamed. All PS1 games, both downloaded and disc-based, can be played through Remote Play. Web browser and Playstation store is also supported.

But honestly, there's little point to bothering with all this when you realize the tablets can't really do much with all this and also just don't have the power to keep up.

The PSP is cheap enough these days anyways.