The stories were overall pretty mediocre. There were only 2 I enjoyed a lot. The rest were okay, some were even bad and/or utterly boring. Moreover, the characters didn't resemble the ones from the show at all sometimes.

And I have to admit that I wasn't a fan of Matt Smith's narration. In direct comparison with David Tennant or Catherine Tate he does a very poor job. The Rory centric story that was narrated by Arthur Darvill was great, though.