ArtworkDepartment - self-explaining - Arachnion?
MainUiDesignDepartment - UI designers - Ekylypse, trygvebw, Arachnion?
CodingDepartments - see below...
MarketingDepartment - how to get people to use Exigo, how to get more developers - trygvebw?
InfrastructureDepartment - server, wiki, bittorrent, etc. - DNAku, Alex?
ApplicationTasks - see below...
AdministrationDepartment - trygvebw

[size=18][b]CodingDepartments[/b][/size]

SubsystemCodingDepartment - everybody able to should be part of this department
WindowManagerCodingDepartment - seth
WidgetSystemCodingDepartment - trygvebw, DNAku-san, deltalima?
MainUiCodingDepartment - Coders of the main Exigo UI

[size=18][b]ApplicationTasks[/b][/size]

Applications are an important part of a desktop environment. But we don't have to have all these programs ready for 0.1. ;) 
PimTask - E-mail, calendar, etc - 
WordProcessingTask
MultimediaTask
UserPreferencesTask
PictureViewingEditingTask
InternetSurfingTask