I would have to say majoring in film/TV was probably the biggest mistake I've made. I knew what I was getting myself into, and even as one of the top ranked students in my major, I wasn't able to break into the field successfully.
I have a ton of skills (editing, directing, producing, writing) and I spent all of my internships working in outlying fields in the film industry (doing PR/Marketing/Event planning for film festivals, etc) so that I'd have those types of job open to me. And additionally, I spent 4 years working in student affairs/development while in college to try and open those jobs to me as well.
Instead, I've found the media jobs are gone, the event planning/marketing jobs are telling me I'm not experienced enough (since the layoffs mean many more experienced people are taking $20-$30k paycuts to work in entry-level positions), and student affairs is telling me I need a Master's.
I'd tell anyone who asks to avoid going into film/tv/production. I know a TON of people in the field, and most can barely afford their rent.
As far as what JJ said, I disagree, I spent 3 years learning AVID and Final Cut and I don't even think I'm great at it, but I can do it. The problem is that there's a billion people who have the same skills, many whom are more experienced or who have better connections. It'd be like if there were only 20 jobs for chemical engineers across the country, everyone else with training in the field would be

ed.