2. Tenth Doctor - The Idiot's Lantern (2006)
Ah, David Tennant - the handsome heartthrob - hailed as being the best Doctor since Tom Baker, and he lasted longer than any other Doctor since him too. During that time, he got some of the most famous and riveting stories of the revived series. Unfortunately, he also got his fair share of turkeys. When trying to choose what to pick for this entry, it came down to a four-way tie between Fear Her, Love & Monsters, The Idiot's Lantern, or The Unicorn and the Wasp. Eventually, The Idiot's Lantern won out. Here's an extremely quick reasoning why...
Fear Her: Written as a last-minute replacement when the original episode (to be penned by Stephen Fry) didn't work out. Head writer Russell T. Davies told writer Matthew Graham to pen an episode that would appeal to children and soften the upcoming series finale for them.
Love & Monsters: Based entirely around a Blue Peter contest, wherein children could submit designs for a Doctor Who monster. The winning monster would be the antagonist in an episode, and the child designer could visit the set and watch filming.
The Unicorn and the Wasp: Agatha Christie is awesome. So due to those reasons, I found The Idiot's Lantern to be the most deserving of placement in this article. Written by a professional writer and Doctor Who veteran Mark Gatiss, and yet still dumber than most other episodes. Its villain was an over-acting television set that repeatedly exclaimed "HUNGRRRRRYY!" They defeat the villain at the end by putting it on a Betamax tape. Wow.
If You'd Like a Good David Tennant Story: The obvious answer here is Blink, which introduced the iconic Weeping Angels, though my personal favorite from his era is the two-part episode "Human Nature/The Family of Blood".