I've got a few.
Hitting a string of all green lights on the way to somewhere. My favorite!
Waking up, on your own, around 6:15am on a Saturday and suddenly realizing "hey, it's Saturday!" and curling back up and sleeping for 3-4 more hours.
A surprise e-mail from someone you thought was mad at you, and you find out they're not at all...they've just been super busy. And the thing you thought made them mad didn't even register with her at all...you've been worried over nothing.
Sitting down and seeing a cool "Law & Order: SVU" episode come on USA that you've never seen. One hour of Mariska, Belzer and Ice-T, busting pervs.
New strings on my
J-45. It just rings so beautifully...