Anyone with a brain knows that most musicians don’t make it big. They play all sorts of gigs they don’t like, or that pay poorly, because they love to play. They frequently work in cover bands to fund the time spent on their own music. It is therefore not surprising that any musician whose name you know probably did this, too. It is furthermore unsurprising that, once a given musician reaches a certain level of fame, evidence of these previous musical endeavors becomes much more interesting. And the Internet, of course, makes it much, much easier to distribute these examples of juvenilia.
So, via Mefi, we point you to video of Trent Reznor’s 80s cover band doing “Eyes Without a Face”. Given the quality and song choices (not to mention Trent’s baby face), we figure this dates from his late teens or early 20s at the latest. (There’s also a Joe Jackson cover. We shit you not.)
(As “Rebel Yell” was released in 1983, which Wikipedia says was Reznor’s senior year, it looks like the time frame works.)