The new migration tool recognizes Internet Explorer favorites, Firefox bookmarks, desktop wallpaper, AOL IM contacts, Yahoo IM contacts and imports them in Ubuntu. This offers easier and faster migration for new users of Ubuntu and individuals wanting to run a dual partition. In addition to single accounts, you can migrate several users' settings in Ubuntu.
Throw in support for migrations over the network (Windows-based Agent or a BootCD?!) and this will be a big help in Windows to Linux migrations on the desktop!