10 Most Underrated Doctor Who Episodes

10. The Unicorn And The Wasp

Out of David Tennant's three series as the Doctor, his one spent travelling with Catherine Tate is looked back on with the most fondness.

The relationship between the Tenth Doctor and Donna Noble was totally different to anything else NuWho had seen up to that point; two bickering friends, as opposed to the dashing hero and his love interest. It was a refreshing, much-needed change.

Donna was the companion for the much-loved Library saga and the epic Series 4 finale The Stolen Earth/Journey's End, but quite possibly her most enjoyable adventure involved the most famous detective writer of all time.

In The Unicorn and the Wasp, the Doctor and Donna travel to 1926, where they meet Agatha Christie. Then, people start dropping dead under mysterious circumstances. What are the chances? That'd be like meeting Charles Dickens and he's surrounded by ghosts at Christmas.

Tee-hee.

This episode transplants our lead characters into a Christie-style mystery and has tons of fun with it. The giant wasp monster is memorable, if a little non-frightening, and there are plenty of twists and turns as the mystery unfolds. Also, the scene where the Doctor is doing charades in the kitchen is a classic.

In many ways, it's the perfect setup for a Doctor Who story: an intriguing mystery, a dash of sci-fi, a cast of interesting cannon fodder, and plenty of silly comedy.