I am a real fan of bike commuting, having done it habitually since the early 70s, at round trip distances ranging form 9 to 21 miles. A lot depends on the availability of reasonable biking routes, which are often present in non bike friendly locales. Even more important is the presence of washing facilities at work.

If you can do it, I recommend it highly. I am more energetic at work, I have the fundamentals of an exercise program accomplished by the time I get to the job, and coming home is just plain fun.