Presentation: how_i_converted_my_office_to_linux.ppt

References:

Existing Windows system to VirtualBox converter
ITWire link to my article

Remmina
- Remote desktop client handles: NX, VNC, RDP, SFTP, SSH, XDMCP

Google command line http://code.google.com/p/googlecl/ (Now in repository).
- Control: Blogger, Youtube, Picasa, Docs, Contacts & Calendar (may have bugs).

OpenChange - Exchange alternative with native support for Outlook
http://www.openchange.org

Remote control your desktop using your Google phone - http://www.gmote.org/

Gow – The lightweight alternative to Cygwin - http://wiki.github.com/bmatzelle/gow/