Protostack AVR28 pin board
One half of the board is dedicated to the microcontroller, whilst the other half resembles our standard prototyping layout and can be used to build your circuits. The board supports a 10 pin ISP connector to program your microcontroller, a reset button, external oscillator and a low pass filter for AVCC.
Links are below...
I almost forgot. You can get this board as part of a kit with either an atmega8a, atmega168a or atmega328 microcontroller. The links for those are below.