To wake up feeling a slight chill.
To sip on a warm cup of coffee while looking at the light drizzle outside.
To play music and find that you play Chariots of Fire, Carmina Burana - O fortuna, Joe Satriani...in that order.
A pain to tear myself away to go to work. But, well, these are the exact days that you have deadlines and deliverables, and you just cannot afford to miss!
Sigh, so I sit here in office with a cup of coffee, looking out, but full of beans, waiting for the day to explode on me.