A PSP clone known as the 2PG console comes with cartridges that allows you to play retro NES games. Moreover, the system has an A/V out and is supplied with a PlayStation clone controller in order to play the games on TV.
To quote: Sure, this portable gaming system might LOOK just a little bit like the Sony PSP, but don't expect it to play any games made in the last 15 years.
Another in a long line of cheap Chinese knock-off systems, the 2PG TC8281 handheld plays a mish-mash of questionable 8-bit and 16-bit retro games that come only on special multi-game cartridges.
The 2PG console comes with five built-in games, as well as an additional "112 in 1? game cartridge, for a total of 117 games for under $50. Hundreds of additional games can be played if you know where to look for the proper cartridges. The system also has an AV out and comes with a cheezy-looking Playstation clone controller so you can play games on your TV.
If you're willing to take a gamble on one of these somewhat suspect systems, you can get your hands on one over at http://www.dealextreme.com/details.dx/sku.12562 for $48.80 USD. More PlayStation 3 News...