The longest running kid program, with new episodes for consecutive years, without a "year/two year break", keeping the same traditional name is... ... Power Rangers They are currently in their 14th year (EDIT: 23RD YEAR NOW) and entering their 15th Year Anniversary next season with "Power Rangers: Operation Overdrive". For 15 years straight they have been #1 in toy sales for boys. Here's the listing, for those bored. EDIT: Whoa! Time flies! Currently it is 2015 (not 2006) and the series is back with Saban Brands, its 23rd year as Power Rangers Dino Charge YEARS/NAME: 01 - Mighty Morphin' Power Rangers (uses Zyuranger footage, and made-for-Saban Zyuranger 2.0 footage) 02 - Mighty Morphin' Power Rangers (uses brief Zyuranger 2.0 footage, all MMPR footage is US-shot, then Dairanger footage for all zord battles) 03 - Mighty Morphin' Power Rangers/Alien Rangers (all MMPR footage is US-shot, Alien Rangers is based off Kakuranger) 04 - Power Rangers Zeo (uses OhRanger footage) 05 - Power Rangers Turbo (uses Carranger footage) 06 - Power Rangers: In Space (uses Megaranger footage) 07 - Power Rangers: Lost Galaxy (uses Gingaman footage) 08 - Power Rangers: Lightspeed Rescue (uses GoGo V footage, Titanium Ranger is first US-made Ranger) 09 - Power Rangers: Time Force (uses Timeranger footage) 10 - Power Rangers: Wild Force (uses Gaoranger footage) 11 - Power Rangers: Ninja Storm (uses Hurricanger footage) 12 - Power Rangers: Dino Thunder (uses Abaranger footage) 13 - Power Rangers: Space Patrol Delta (SPD, uses Dekaranger footage) 14 - Power Rangers: Mystic Force (uses Magiranger footage) 15 - Power Rangers: Operation Overdrive (uses Boukenger footage) 16 - Power Rangers: Jungle Fury (uses Gekiranger footage, the Shark, Bat, and Elephant Rangers are US-made Rangers) 17 - Power Rangers: RPM (uses GoOnger footage, story is 100% original) 18 - Mighty Morphin Power Rangers 2.0 (cancelled, was a "reversioned" attempt at the original MMPR with special effects added, etc.) 19/20 - Power Rangers: Samurai / Power Rangers: Super Samurai (airing now, uses Shinkenger footage, nearly 100% identical) 21 - Power Rangers: Megaforce (A parody of MMPR in essence) 22 - Power Rangers Super Megaforce (featuring Gokaiger footage as a "power up" mode and Sentai teams as "new powers") 23 - Power Rangers Dino Charge (airing now) 24 - Power Rangers Dino Super Charge (airing 2016) Notable events include the 10 year anniversary episode which aired during "Power Rangers: Wild Force" which brought back every single Red Ranger (save one, Steve Cardenas as "Rocky") in a team-up episode against villians originated (so the story says) from the "Power Rangers Zeo" series. As another throw-back, some of the villians wore the costumes of the "Big Bad Beetleborg" series, and many villians were voiced by former Power Ranger actors (Catherine Sutherland "Kat" and Walter Jones "Zach"). Another was the return of Jason David Frank (Tommy in MMPR, PRZ, PRT) as the Black Dino Thunder Ranger in "Power Rangers: Dino Thunder". He narrated the history of the Power Rangers for the 500th episode, as well as had an episode where he had to fight his "past Rangers" (MMPR Green, MMPR White, PRZ Red) in the episode "Fighting Spirit" in Dino Thunder. Some moments that Power Ranger fans love regarding the series history: MMPR - "Green With Evil" The first appearance of "Tommy", who is the evil Green Ranger. The final part of this 5 part series has Tommy turning good and joining the other Power Rangers. MMPR - "White Light" The Rangers find themselves completely overmatched by a new monster, when they discover Zordon (their mentor) has created a new Ranger. The White Ranger is none other than Tommy, who becomes the leader of the team and helps them beat the monster. This remains one of the most-watched kids television show episodes of all time. MMPR - "The Return of the Green Ranger" Tommy, now the White Ranger, is forced to fight the evil clone of himself who now holds his old Green Ranger powers. PRiS - Season Finale 3 parter Literally the "end of the Zordon" era, as what happens to Zordon controls the fate of all the monsters and "main villains" we've come to know for the first 5 years of Power Rangers. PRWF - "Forever Red" All the Red Rangers from Power Rangers history join forces to fight off the remnants of the Machine Empire. All by Steve Cardenas, "Rocky" from MMPR/PRZ, return for this one-shot special episode. PRDT - "Fighting Spirit" Tommy, now a mentor for the current team of Power Rangers and also the Black Ranger, has to fight incarnations of his previous Ranger-selves (Red Zeo, White MMPR, Green MMPR) to save his own life. PROO - "Once a Ranger" Thrax, the son of Lord Zedd and Rita Repulsa, arrives on Earth and unites the Operation Overdrive villains in to an "Alliance of Evil". They destroy the morphing grid, causing the Operation Overdrive Rangers to become powerless. The Sentinel Knight then picks 5 Rangers from the past and restores their powers - Tori (PRNS Blue), Kira (PRDT Yellow), Bridge (PRSPD Red), Xander (PRMF Green), and Adam (MMPR Black). With the help of Alpha 6, the morphing grid is repaired and 11 Rangers battle Thrax for the fate of the Earth. Another fun fact, the character that played Adam (MMPR Black, Zeo Green, Turbo Green) is Johnny Young Bosch. If that name sounds familiar, it's because he played "Vash" in Trigun. Some YouTube links. MMPR Season 1 Intro YouTube MMPR Season 2 Intro YouTube MMPR Season 3 Intro YouTube Zeo Intro YouTube Turbo Intro YouTube In Space Intro YouTube Lost Galaxy Intro YouTube Lightspeed Rescue Intro YouTube (audio sucks) Time Force Intro YouTube Wild Force Intro YouTube Ninja Storm Intro YouTube Dino Thunder Intro YouTube SPD Intro YouTube Mystic Force Intro YouTube Every season is currently available on Netflix (including Season 1 of Power Rangers Samurai), and DVD collections of the first 7 seasons are available now or will be very shortly.