One Democratic operative suggests keeping track of Barack Obama’s cabinet selections with a March Madness-type tournament chart. While no official announcements have been made, a controlled series of leaks have given a good sense of who's still in contention, and which big names have been bounced from the bracket. The new administration still has some major posts to fill, including heads for the departments of Defense, Housing and Urban Development, Transportation, Labor, and Energy, not to mention the Environmental Protection Agency. But a number of the biggest prizes seem to have already been won, and a handful of serious contenders...