(Edit: I decided to rename the shield to avoid any trademark issue with the Arduino folks. It is now known as the TinyLoadr Shield)
I just got in the latest version of my ArduinoISP Deluxe Shield.
I designed this shield to easily program microcontrollers using the ArduinoISP sketch and an Arduino. The latest version supports the following microcontrollers:
And it should also work with any other microcontroller that is pin-compatible with one of those listed (like the ATtiny13, and ATmega8/48/88).
It's very easy to use and is really helpful if you like using bare AVR microcontrollers in your projects like I do. If you'd like to learn more about it, you can check out this blog post.
If you'd like a shield for yourself, then I'm selling them over at Tindie.
Here are some pics of it (click for full res):