Will Ferrell in Semi-ProSEMI-PRO

In the '70s-era sports comedy Semi-Pro, Will Ferrell plays Jackie Moon, a one-hit-wonder pop star who becomes the owner of the American Basketball Association's Flint Tropics, a struggling Michigan team for which he also serves as coach, promoter, and star player. And forgive me for asking, but shouldn't any one of these five roles have been enough for Will Ferrell?