Poker Zombie
Royal Flush
Early in my games, I used to often joke that the worst shufflers would do better if they had a bucket and a stick. Now they are all very good.I would love for everyone in every self-dealt home game to shuffle like a pro. The reality falls far short of that.
Point out errors, and why it's wrong. Don't accuse them of cheating, because most bad dealers just don't realize their error. If they can learn poker, they can learn to shuffle correctly.