Thriller the album or thriller the song? The album probably would have still been one of the biggest albums of all time, although maybe not #1.

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The song, on the other hand, probably would not have reached the heights it did without the music video. I, along with millions of others, sat glued to the TV the night it debuted. It was a theatrical music experience that people talked about for a long time thereafter. I was only a child at the time, but I still remember it. Here we are 40-years later and it's still widely regarded as one of the, if not the, greatest music videos of all time.