How is this effect called?

I just wacht a show on TV with Jamie Oliver and I saw this effect. Do you know how is called ?
And do you know a tutorial for it?
The effect is in the last 5 seconds of this clip on YouTube:

Jamie Oliver introduces the 15-Minute Meals app – YouTube

via Video Editing Forums: Digital Director – Adobe Premiere, Premiere Elements, and After Effects http://www.videoforums.co.uk/adobe-premiere-premiere-elements-after-effects/43144-how-effect-called.html