Has anyone taken this program? Does it have a good reputation? What is a comparable program offered online?
Bentley's program has a solid reputation. They really prefer, and may require, that you be out of state to be part of the online program, so if you're in Massachusetts, you'd want to apply for the on campus program. There aren't a lot of online UX programs because it's so interdisciplinary and group-focused as a discipline. I believe Iowa State has a masters online but it may be a bit more focused on development.
I am currently in the Bentley MSHFID program. I came here mostly because of it's solid reputation and because I already lived in the Boston area. We do have several remote students who participate in all class sessions via our online learning environment. They see the video of the instructor, share all presentation materials, and participate in classroom discussions.
If you email the program director, Bill Gribbons, at firstname.lastname@example.org, I'm sure that he would put you in touch with a remote student so that you can hear about their experience first-hand.