My first ever commute (to school and back-- ~30km RT) was last friday (heavy rain, wind 30-50km/h, and cold). I survived and did it again today. I've noticed that I'm in a really good mood when I get to school (able to actually work during first period, and not sleep) and plan on commuting every day until the end of the year.
Although I got lost both days (I'm not the greatest with directions) I had fun, and got a good workout.

I bought some Shimano cycling shoes on the weekend and just spend an hour in the park practicing clipping in and out. I'm going to take a risk and try commuting with the clipless pedals/shoes tomorrow.