Jimmy Fallon takes over `` Tonight Show '' on Monday . Show has long and storied history , but do viewers care about that ? Comment: Landscape of late night is now splintered into many shows .
Jimmy Fallon takes over `` Tonight Show '' on Monday . Show has long and storied history , but do viewers care about that ? Johnny Carson dominated late-night TV from `` Tonight 's '' perch . Landscape of late night is now splintered into many shows .