Study Design: The study will be conducted in 3 phases. In Phase 1 (Year 1), we will evaluate a pilot FLU-FIT Program that is already underway at KP Santa Clara and implement it systematically for its annual influenza vaccination clinics in 2009-2010. In Phase 2 (Years 2 and 3), the key elements of the KP Santa Clara FLU-FIT Program will be tested in a time-randomized trial within 8 other KP Northern California sites. On randomly assigned dates at each of the 8 influenza vaccination clinic sites, patients will receive either the FLU-FIT Program (intervention) or influenza vaccination only (control). The primary outcome will be the proportion of intervention subjects between the ages of 50 and 80 who are initially due for colorectal cancer screening that become up to date with colorectal screening within 3 months after receiving their influenza vaccine, as compared to similar subjects in the control group. The robustness of the intervention as an effective and sustainable intervention to increase rates of colorectal cancer screening in "real world" settings will also be evaluated according to the RE-AIM criteria (Reach, Efficacy, Adoption, Implementation, and Maintenance). In Phase 3 (Year 4), data will be analyzed, and a toolkit for further dissemination activities will be developed.