Kevin Federline's "One Tree Hill" co-stars dished about his work ethic and generosity on MTV's "TRL". Federline has a recurring guest roll on the CW show. After being called "so professional and so nice" and even brought his mom to the set. Listen closely, and at the end you can hear Chad Michael Murray say how Spears' ex not only came to his birthday party but bought everyone drinks.
See video here.