I've just made a Twitter feed reader with the ethernet shield and a 1602LCD module by modifying JO3RI's twitter client example
http://arduino.cc/forum/index.php/topic,93480.0.html
instead of displaying tweets on the serial port monitor, i've modified it to output on a 1602 LCD module.
but it can only read tweets from accounts that posts tweets publicly
are there any examples out there that can read protected tweets?