When most people think about '90s sci-fi shows, their minds are immediately drawn to "Star Trek: Deep Space Nine," "Star Trek: Voyager," "Stargate: SG-1" and "The X-Files." Audiences even got some great sci-fi cartoons back then, as evidenced by "Futurama," "Cowboy BeBop," and "Batman Beyond." Long story short: sci-fi thrived on the small screen in the '90s, but some of the best series flew under the radar. These shows weren't particularly successful back in their heyday for whatever reason, but not every great show can be a hit. So, without further ado, here are five underappreciated genre shows from the '90s that you should add to your watchlist.