Yes, I use the commuter rail and the T to get to school in Boston (depending on the semester it has been 3-5 days a week). It makes a lot more sense than driving because of the price of gas/parking and the fact that I can get reading done on the train as opposed to having all that unproductive time in the car. Plus, it pollutes less. I do have to say that the commuter rail line I use needs to expand service, and it would also be nice if they added capacity for bikes during peak hours (bikes currently not allowed on trains during peak hours because there's just not enough room). Then if I could only get up the guts to try riding in Boston...
2011 Surly LHT
1995 Trek 830