Wii

The Wii is Nintendo's second disc-based home console, and the first to have fairly in-depth online capabilities, plus a sophisticated updatable operating system. The Wii shares much of its base hardware with the GameCube, and thus is backward-compatible with GameCube discs and memory cards.

Unused Banners
The system menu contains a "DVD" banner for the Disc Channel, which would presumably be displayed when a DVD was inserted. This, along with spotted functions in the code (specifically syscalls 50 and 51, which control DVD video-related functions), suggests Nintendo planned to include DVD playback for the Wii.

The Wii's hardware is capable of DVD playback, which can be "unlocked" through Wii homebrew software, but this does not work on some newer Wii consoles.