I arrive late night regularly - pick up two drinks and scoot out. Usually in and out in five minutes.
One of the baristas is a musclebound hottie who I could look at for DAYS but that's beside the point - it's a good hangout Starbucks due to video gamers playing their Nintendo/handheld games, good internet speed, and it's quiet.
The staff is, for the most part friendly and never particularly busy. If I'm in a rush and it's an evening, they're usually good to go.
What's fun? Grab some caffeine and go play some motion video games at Gemini Arcade! Wooo!