I recently started experimenting again with Arduino and must say I am having a lot of fun.
I had the idea to implement an RTC clock with arduino and excellent Macetech Chronodot and got myself the needed parts from Adafru.it. As it often turns out with Arduino project, someone already had the same idea (and luckily they used the Chronodot too): before reinventing the wheel a fast google search revealed “An Arduino LCD clock using the ChronoDot RTC”.