"Every single program on your machine has a uniform UI" Minesweeper, Internet Explorer, Windows Media Player, Windows Live Mail, Windows Live Messenger, Word 2

"Every single program on your machine has a uniform UI" Minesweeper, Internet Explorer, Windows Media Player, Windows Live Mail, Windows Live Messenger, Word 2010 6 Applications by a single vendor. 6 UIs that are similar (WIMP paradigm et al) but different (UI looks) - just like any 6 websites are similar (links, some forms, 2 or 3 pane layouts, ...) but different (design details).