Tell me about yourself is one of the most deceptively difficult questions in an interview. It's normally asked at the beginning of the interview. If you nail it, it will set the tone for the rest of the interview. In fact, it can even get you hired.
Is the interviewer asking about you or how you can contribute to the company? A lot of recruiters say it is the latter. I say both. Combine the two.
I want the interviewer to remember me. So what is it about me that is different from other people? Then I into how I will be a great hire for the company. How I would answer for myself:
"I am a big football and rugby fan. Football because I used to watch Spurs with my big brother as a kid. The rugby is a legacy from studying in NZ. I did my B.Sc (Hons) degree in Christchurch where I got my degree in 3 instead of 4 years. I persuaded them to let me skip 1 year as I scored full marks for Economics for my Bursary exams, you see.
My first job was with a consulting firm where I worked on the KLIA project, economic policies for ADB and privatization projects. But after I found myself finishing my assignments in half the time assigned, I knew it was time for a career change. I became a banker…”