I generally take some time each afternoon to process phone messages and wrap up any emails that need attention before I head home. If I need some background noise or am looking for some food for thought, I'll often listen to a podcast.
Modern Worker has a creative way of doing podcasts- he chooses a series of news stories and then talks off the cuff, sharing his ideas and relating the story back to some workplace principle.
D. Scott Miller has also created a fun series called "Inside the Youth Ministers Studio". Scott asks a series of interesting questions and relates the conversation back to ministry. Scott also interviewed yours truly when I was working in the Charm City.