FreeWare & Web 2.0 Tools used/recommended by GSD users:

Prezi: Cloud-based non-conventional presentation application.
Screencast-o-Matic. Record and share what's on your computer screen.
Windows Live Photo Gallery: Create panorama pictures
Windows Live Movie Maker (Windows 7 required): Comparable to iMovie in terms of ease of use
SafeshareTV: Create safe links to YouTube videos; includes cropping capability