The reason this is good is because of his presentation. For the cards, if he is using the method I think he is using then you want to look at the work of Chan Canasta or David Berglas. By the way, Chan Canasta is famous for failing often on television doing precisely this kind of trick. It is difficult to do. Derren Brown has an alternative handling that is widely used.
The second effect is called a drawing duplication. The version he uses is great. There are a million drawing duplications out there that could accomplish this effect. Start with Anneman, work your way through with Bob Cassidy or Richard Osterlind and then maybe turn to Richard Turner after that.