I am ... I get really ADD at work ... write a line of code, check email, write a line of code, check Bike Forums, write a line of code, respond to AIM, write a line of code, text a friend, write a line of code ... etc.
Helps me from getting too entrenched in coding, which leads to me burning out and getting nothing done.
Also, I don't have internet at home (weird coz my profession is web-technology-related) so this is the only time I get to do internet things. When it turns 6 o'clock I turn into a pumpkin! No more internets. Bike time!