I am an audiologist. My BS was in Comunication Science and Disorders (Speech Pathology and Audiology). I liked both fields, but ultimatley choose to get a clinical doctorate in audiology because I liked the technical aspect of working with hearing aids. Speech Pathology is an interesting, rewarding, and diverse field. You can work at a hospital with people who have difficulty swallowing (ie after a stroke), schools with children, or in speech therapy (ie after vocal cord surgery or singers). Important personal qualities of a speech patholgist include patience, desire to help others, creativity, and good interpersonal skills.
Course topics include: Anatomy, child language development, phonetics, audiology, and clinical placements
The masters degree takes about 2.5 years (including summers). When applying to grad schools I noticed that the yearly tuition did not factor in summer courses (by credit). These add up fast! Make sure you check into it.
The field is great because it is so flexible (full time, part time, and so many different settings). I work with a lot of speech pathologists who love their jobs. If you haven't done so already check out: www.asha.org
Please ask if you have any specific questions!