For those you with tons of NES cartridges lying around, you are in luck! Seems as if the folks over at thinkgeek.com have come up with an amazing product. Retro Mini Handheld NES System($50)
The Retro Mini accepts all of your old NES cartridges and plays them on a convenient hand held device. The unit requires 4 AA batteries, boasts a clear high res screen and even has an AV output which you can plug into your flatscreen at home.
Just make sure and clean those metal contacts you wouldn’t want the flickering blue screen of death to come back and haunt you after 24 years!