When you have to play a character that seems to be a relatively decent person and seems to be like yourself, I think the trick in that kind of character, so that you don't become a cliche, is to find where their weaknesses are.
“Alzheimer's, Parkinson's, brain and spinal cord disorders, diabetes, cancer, at least 58 diseases could potentially be cured through stem cell research, diseases that touch every family in America and in the world.”