Eligibility. Eligible subjects must have a diagnosis of Stage III or IV NSCLC or extensive stage SCLC, or Stage IV colon cancer and be receiving a chemotherapeutic regimen that requires visits to the Mayo Clinic Department of Medical Oncology < every 4 weeks for the first 6 weeks following enrollment or undergoing monitoring visits at comparable intervals. Pathological confirmation is not required if the oncology provider specializing in lung cancer has a high level of certainty regarding the diagnosis. Entry criteria will not consider number or location of metastases or prior treatment. The participants will be required to be fluent in the English language and have intact cognitive status (Folstein mini-mental score > 25).