I absolutely loathe this kind of presentation. I have the same problem with Prezi, and people who carelessly use transitions and animations in PowerPoint.
All this will achieve is distraction. Prezi, when used properly, can help to show the structure of your content, but it takes extreme care to do it properly (this particular slide show doesn't do that at all, the zooming and panning doesn't add any value), and even if done well it's still distracting. When I'm presenting I want people to listen to what I'm saying, and having them mesmerized by my slides does not help, no matter how beautiful they might look!
This slide show makes a few other mistakes as well, including being too wordy and having a number of spelling and grammar errors (he consistently leaves out the apostrophe in "let's").