Thought some folk on here would like to know that there's a new Firmware Update available on the Wii which increase's the Wii's internal software to version 4.0E. New features include the ability to save and load Wii Shop Channel downloads directly to/from an SD Card, meaning easier access and saving of downloaded Virtual Console, WiiWare and Wii Channels.
Additionally, a separate SD card menu is now available to launch Channels from. These Channels do not appear on the main Wii Menu, but a separate one of the same design, but with support for an expanded 240 titles total. SDHC support has also been enabled, allowing for SD cards higher than 2GB (up to 32GB!) to finally be supported by the Wii.
The Wii Shop Channel now also supports "Virtual Console Arcade" games - Arcade titles from the past.