The first half of Doctor Who's sixth series has had some seriously memorable moments so far. But do recent highlights top the best stories from the sci-fi show's extensive history?

Hell yes. The time-warped episodes featuring new villainous telepaths The Silence were riveting and frightening in equal measure, even though the audience had to suffer the lunacy of a sane Richard Nixon.

The empathic two-parter revolving around the replicant Gangers was also awesome. Especially when – spoiler alert! – viewers found out that not only was Amy Pond one, but so was her celestial baby. And Neil Gaiman's sublime episode "The Doctor's Wife" may have been the best Doctor Who ever aired.

Were there other standouts? Let us know your favorite Doctor Who episodes in the comments section below. On the line is a free box set of Doctor Who: The Complete Fifth Series (right) and Doctor Who: A Christmas Carol. The Time Lord disciple that makes the most convincing case for Series 6's place in the space-time continuum wins the prize package.

It's all part of Wired.com's continuing tag-team with BBC America, which carries on next week with exclusive clips and an interview with Matt Smith, the Eleventh Time Lord himself. Entries must be received by 12:01 a.m. Pacific on June 30, 2011. Winners must live in the United States. To the TARDIS!

Note: If you do not have an e-mail address or Twitter handle associated with your Disqus login, you must include contact information in your comment to be eligible. Any winner who does not respond to Wired.com's notification within 72 hours will forfeit the prize.

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