VNC
Control one PC from another. Essential freeware.

Nero
The best DVD and CD burning software around.

AudioGrabber
Rip CDs, with track names and tags generated from the FreeDB music database.

Audio Conversion Wizard
Converts audio files between MP3, WAV and OGG formats.

MediaPortal
Superb freeware alternative to Windows Media Center.

DVD2One
Fast compression of DVD data so it fits on a single DVD-R, with no noticeable loss in quality.