I actually enjoy my commuting time. I listen to podcasts or think about what I need to do when I get to work (or home). If I'm on my bicycle, I find that my mine really wanders and I enjoy that.
Once I'm at work, I get down to it and am good for about 4 hours or so (on good days) of really good work. Spend an hour or two on email, light reading, talking to coworkers, and that's my day.
Is there a podcast that will stop me wanting to vomit as the bus driver breaks hard every 10 seconds, or help me battle my way through the queue to get onto said bus?
Once I'm at work, I get down to it and am good for about 4 hours or so (on good days) of really good work. Spend an hour or two on email, light reading, talking to coworkers, and that's my day.