Norton Utilities introduced me to Darude: Sandstorm [video]
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Back then, when commercial software was still cool, it was common for programmers to include hidden "easter eggs" that did cool or unexpected stuff — and an animation of various developers "dancing" to techno was just one of the known easter eggs that Norton had at the time.
Given that Sandstorm was hugely popular and even achieved meme status before Never Gonna Give You Up did, and the fact that the Symantec included a copyrighted song (presumably illegally) in a commercial software package, it is surprising that literally no one (besides me) ever brought this up, at least as per my Google-fu.
On a related note, does anyone else find it a bit sad that most software these days do not include any easter eggs, and have even become downright boring? It feels like developers used to have more fun back in the day.