I found a youtube video from the show America's Got Talent, which features a magician named Smoothini. He does a lot of tricks such as making salt disappear and reappear in his other hand, coughing up cards, etc. I always wondered how people perform magic tricks. I know a lot has to do with distraction, and I think his commentary had a lot to do with that.
Looking at a viewer's comments, he seemed to have some good insight as to how the tricks are done.
The viewer says that when he made cards appear, he only took half. He also put cards behind him, he had a fake thumb for the salt, etc.
I always found this interesting because it's not necessarily the tricks that are magic, it's the way it's performed and the distractions they must use.