Six Degrees of Wikipedia - Find the shortest path between two subjects

IconsExtract - Extract icons and cursors stored in EXE, DLL, OCX, CPL files

Intch - Professional networking app

IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.

WikiBinge - Discover how all things are vaguely connected

IconViewer - Bot Productions's IconViewer utility allows you to view, copy, and save the icons in a file through its property sheet.