4cr gives us some more dirt on NiGHTS:

• Masks allow NiGHTS to shape-shift into a dragon, a dolphin (Ecco, anyone?), and a rocket
• Change scenery according to real-world seasons with the Forecast Channel
• Seven dream worlds to explore
• Exchange items via WiiConnect 24

A personal aside: With NiGHTS incoming, as well as the mature fare in Godfather and Manhunt 2 on the way, AND all the first party IP coming down the pipeline as early as next week (Super Paper Mario is the second coming of Mario, apparently), this Wii thing is starting to look like its smaller, portable cousin the DS, which was also a late bloomer as the industry woke up to its capabilities.