John Stamos, <EM>ER</EM> John Stamos, ER
John Stamos, who guested on ER during November sweeps prior, that is, to the blink-and-you-missed-it mid-season return of ABC's Jake in Progress is set to join NBC's long-running medical drama as a series regular this fall, says the Hollywood Reporter. Stamos will reprise his role of Tony Gates, a flirty paramedic who also is a med student and a Gulf War veteran.