I would recommend the career of teller to anyone that would like a relatively low-stress job. It doesn't necessarily have potential to become a life-long, challenging career, but it's simple and intuitive work for a detail-oriented person. I have worked in banking for four years for three separate banks, ranging for high paced (TCF) to low paced (smaller community bank). There is plenty of room for professional growth whether you choose a smaller or larger bank, and administration is usually more than eager to enroll you in development classes or seminars; additionally most banks have a good amount of tuition reimbursement for business related fields of study.
Negative aspects of the job are few. Even though I'm an art major, it has been difficult to find employment in an art-related field now that I'm in the "banking loop." Once you know the business, there is *always* a job to be found nearly anywhere, and your skills are transferable because many banks share similar programs and procedures. However, because your success if heavily weighed on your ability to be completely accurate when processing transactions, it can sometimes feel "nit-picky." Additionally, there is no denying that you're working in the financial sphere, and it can sometimes feel like empty work, and not particularly self-fulfilling.