During Nintendo president Satoru Iwata's GDC keynote today, the company revealed that the Wii will finally get SDHC support (that means compatibility with bigger SD cards) through an update that's available now.
With the new Wii Menu 4.0 update, you can download content directly from the Wii Shop Channel to your SD/SDHC, and the card will show on the Wii's main menu. You can then open the card to see your content in Channel format (up to 240 SD Channels are supported).
Given that the SDHC format reaching 32GB (12GB more than the hard drive in the original Xbox 360), supporting the open standard sounds like a much better solution than a honking standalone box anyway—at least to me. Other thoughts?