I like OpenSuSE. It, and its predecessors without the ‘Open’ part in their name have been my Linux environments of choice since my university days, back from SuSE 6.4. My use of Linux as an operating system has been steadily increasing, almost at the same pace of the quality and the possibilities of the applications the OS provided me with.
Belgium has invested quite some effort in what is called here the e-ID. It’s a smartcard used as identity card, with the added functionality of electronic signatures that are protected by a PIN code. One of the killer applications is considered Tax-On-Web, where one can do his tax declaration online.