BBC America have realeased a refresher video for the first half of Series 6. Watch below in HD:

Here's what BBC America said about the video:
Before the premiere of new episodes starting Saturday August 27 at 9/8c on BBC America -- catch-up on the first-half of the season and relive all of the Doctor, Amy & Rory's amazing adventures across all of time and space. The mysterious child trapped in the spacesuit. The pregnancy of Amy Pond. The revelation of River Song's true identity. From Canton Delaware III & The Silence to The Black Spot's Siren, Idris, Cleaves and Madame Kovarian, re-acquaint yourself with all the incredible characters he's met so far, before the August 27 premiere of "Let's Kill Hitler."