Star Trek: Deep Space Nine

Having achieved great success with Star Trek: The Next Generation, the producers of the Star Trek franchise sought to shake up the formula for their next spinoff, Star Trek: Deep Space Nine. Namely, they made the lighting all dark and spooky, and they had cast members act unhappy and argue a lot. Also, instead of having its characters go places on a starship, the series took place on a space station, on which the cast mainly sat and waited for the universe to come to them.
Unfortunately, the subdued lighting, coupled with the soothing, somnolent voice of star Avery Brooks, swiftly lulled viewers into unconsciousness. Merchandising revenue nonetheless kept the series afloat for seven seasons.
Viewers scarcely noticed when the crew -- bored of waiting on the station -- got themselves a spaceship to call their own, the Valiant, in the third season. Thanks to a special Quantum Contrivance Drive, it could turn invisible, an ability that proved especially handy during the Valiant's maiden voyage to the Girls' Locker Room Nebula.
Taking advantage of viewer disinterest, Lt. Worf from The Next Generation joined the crew as a political refugee in the fourth season, after the Klingons' Time War with Doctor Who took a turn for the worse. Worf later took a key part in the station's war against the Mighty Morphin' Shapeshifters, a conquering race of sentient Play-Doh, after a sneak attack destroyed all the florists in the Alpha Quadrant.
Although the series prominently featured the war, the crew still had time for thrilling holodeck pastimes, including playing nine innings of baseball and helping a holographic 1950s-era lounge singer defeat the Mods -- and then, after the program had been revised for historical accuracy, the Mob.
While the series may be ultimately forgotten, it's notable for several firsts, including breaking a taboo by mentioning the existence of bathrooms in the future. Cleverly, the writers used the code word "waste extraction," and never actually showed the bathroom onscreen. Since it was established in the original series that indoor plumbing interfered with the delicate balance of a dilithium warp matrix, previous Star Trek crews relied instead on sophisticated undergarments, which were mercifully left out of the various series' technical manuals.
In a first for the Star Trek series, Deep Space Nine was a heavily re-edited and re-shot version of a little-seen series Paramount had purchased from Warner Bros., Babylon 5.