Perhaps the most unique sign-off in TV history was aired by WLWI, when it was an ABC affiliate. It featured the zooming out of a model of their TV studio - which is suddenly blown up right in the middle of it. VO is by David Letterman, who got his start at this station.

The station was renamed WTHR in 1976. It switched network affiliation to Letterman's first network home, NBC, in 1979.

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