Overall, I like this Twitter advert. They have a hodgepodge of celebrities/experts showing why and how they use Twitter. But the pace of the video is a bit slow and it goes on a little too long.
Considering the brand is a real-time, fast-paced environment, this advert seems contradictory to the product. The astronaut part is interesting, in the fact you can tweet from outer space. I wonder if @Astro_Paolo has checked in. But seriously, this ad clocks in under 3 minutes, which [once again] goes against the whole Twitter brand of nano-communication. But I guess they're focusing on the connection that can occur on this channel.
The copy being typed in to the box is a little too reminiscent of Google's better advert, which has a focused, developed storyline:
I wonder about the musicians they have chosen to highlight in the video. I am a big fan of @Yelle but 1) don't follow them because they're not a grand Twitter tour de force. It's interesting they didn't choose to highlight some of the people who have made Twitter a phenomenon, such as Ashton Kutcher, Oprah, Justin Bieber*... etc. [Twitter has servers devoted to 3% of their Justin-Bieber-related content].
But I guess they're trying to make the Twitter brand a wholesome environment filled with discovery rather than the noisy marketplace it is. They have inadvertently showcased what the Twitterverse is truly like: a bunch of people yakking in less than 140 characters with no real story behind it.