I rarely travel south of NYC, but compared to the USAir and Delta shuttles from BOS to LGA round trip FC on Acela is less than a 1-way coach ticket on the shuttles with the usual few days notice I typically have.

I'm not supposed to expense FC travel, but I can hide it in my expense report and not feel guilty cause frankly I'm still saving the company money.

I have also found the cabin attendants have gotten better (for a while half would be asleep on the morning trains) and the food is quite acceptable.