Premiered: February 20, 1968, on NBC
Premise: The classic whodunit about the razor-sharp detective with a rumpled raincoat, a bumbling manner and no apparent first name. He always has 'uh, just one more question' before nailing the killer. `Columbo' premiered as an NBC series (following a couple of highly regarded TV-movies) in September 1971 as one of three rotating `Sunday Mystery Movie' elements (`McMillan and Wife' and `McCloud' were the other two). It ran for six seasons and was revived periodically in TV films over the next decades.