Some people don't even try anymore. There's a video circulating on many Asian tech sites (and now some English ones) that is purportedly Steve Jobs rehearsing the keynote speech for the introduction of the iPhone 5.
According to the fake video, the next iPhone 5 will feature digital scent technology and a battery that doesn't need to be recharged. It's not those wild claims that make this video obviously fake, it's that the man who is supposed to be Steve Jobs doesn't sound anything remotely like him. But the absolute best part of the video has to be when Steve Jobs stops to change his shoes. Total fail people.