The best part of any taxi out, or arrival for that matter is the runway guessing game. It has become like a game show, either bells and confetti ding... ding...ding we have a winner! Or waa...waa...waa buzzzzzzer, thanks for playing and better luck next time.
ACARS ding on taxi out triggers the question, "well captain do you want me to type or taxi?" While I'm thinking... or are you going to try to do both while I decide how far to let you get off centerline before I say something.