As of Jan. 1, Pluto TV now has one of the biggest sci-fi series of the 1990s — or, ever, really — streaming for free in its library. Despite its acclaim and it being a cultural landmark, The X-Files, ...

The X-Files was known back in the '90s for everything from alien conspiracies to crackling chemistry between co-stars to the theme song that was then (and still is) easy to whistle along with. Now, ...