How about Jason Bateman? I checked his IMDB and he seems to have been in a number of tv shows. A bunch only lasted a year though...
The Jake Effect as Jake Galvin (2006)
Arrested Development as Michael Bluth (2003-2006)
Some of My Best Friends as Warren Fairbanks (2001)
George & Leo as Ted Stoody (1997)
Chicago Sons as Harry Kulchak (1997)
Simon as Carl Himple (1995-1996)
Valerie's Family as David Hogan (1986-1991)
It's Your Move as Matthew Burton (1984-1985)
Silver Spoons as Derek Taylor (1982-1984)
Little House on the Prairie as James Cooper Ingalls (1981-1982)
The Jake Effect as Jake Galvin (2006)
Arrested Development as Michael Bluth (2003-2006)
Some of My Best Friends as Warren Fairbanks (2001)
George & Leo as Ted Stoody (1997)
Chicago Sons as Harry Kulchak (1997)
Simon as Carl Himple (1995-1996)
Valerie's Family as David Hogan (1986-1991)
It's Your Move as Matthew Burton (1984-1985)
Silver Spoons as Derek Taylor (1982-1984)
Little House on the Prairie as James Cooper Ingalls (1981-1982)