I'm lucky to live in an area where bike lanes are common. It's downhill to work, and uphill back, which means I can take a shower at home when I really get sweaty! I'm just starting but so far love bike communting.
I work two jobs and go to school, so I do a lot of commuting. I can only commute to one job, the other is 40 miles away in LA, but I manage to bike 3-4 days a week.