Erni:
And of course there's no serial monitor for debug messages.
Actualy there is, you can use TinyDebugSerial or even SoftwareSerial
And if you want to connect some servos, there is a library for the 45/85 here.
http://www.cunningturtle.com/servo8bit-library-version-0-6-released/
I probably should have qualified that with the limited pins, I find I usually cannot spare the IO's for serial debugging 