I tend to start off my day with two websites:
Set - I like this as a good way to wake me up.
Random word generator - I play about with the words and see what ideas come to mind. Sometimes I get ideas for stuff I'm currently working on, most of the time I just have interesting ideas that are a bit of fun.
I know I'm a bit eccentric however and was wondering what others do to start off their day when they get to the office?