Hint Movies are special short-length video clips that give players hints and tricks in New Super Mario Bros. Wii. After using a Toad House for the first time, players are invited to visit Princess Peach's Castle and watch Hint Movies. Hint Movies can be watched at any time by visiting the castle and hitting the large Block found inside. All Hint Movies can be unlocked by satisfying a certain objective in the level they are associated with, however the player must pay Star Coins that they've collected in order to fully unlock them. There may be more than one video associated with a level. There are 65 Hint movies in total.
No other game features Hint Movies, however a similar concept called the "Tip Network" appears in Super Mario Galaxy 2. Unlike Hint Movies, the Tip Network is free and only accessible during the level it is located in.
There are four different types of Hint Movies. The type of the Hint Movie is displayed next to the level number on the menu, as well as the price in Star Coins ranging from zero to ten. All 231 Star Coins must be used to fully unlock every Hint Movie. Hint movies which showcase more exploitable shortcuts or higher difficulty generally have a higher price.