I ride "The Pig", my heavy, steel mtb that is absolutely unstoppable, or my "sports car", my '06 Raleigh Grand Sport. Of course the sports car moniker was much more true when I still had my supercourse.
The Pig is now the bike that lives at work and is more often ridden by one of my staff when they don't feel like taking the bus. Its nice to know that they follow my lead in riding to work. I now have 3 part time commuters that work for me.