Everyone loves a good 'before they were famous' story, right? Well, here's one pretty much the entire planet can enjoy.

This video of an unknown Mark Zuckerberg speaking to a nearly empty Harvard class in 2005 recently popped up on YouTube.

Zucks chatted about some newfangled creation of his called Facebook (which he developed from his Harvard dorm in 2004) and computer science, in general. Facebook had a buzz in 2005, but hadn't yet become the phenomenon that it is today where everyone and your grandmother tools around on it, egging the guy who sat behind them in 5th grade social studies to play Words With Friends.

How times change, huh? If Zuckerberg shows up now, students could sell their seats on StubHub for a pretty penny.

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