Instructables has a step-by-step for turning a regular old landline phone into a VoIP phone.
This hack requires a little bit of electronic hobbist kinda soldering and might not be for the novice hardware tweaker, but the results look quite good. If you've been wanting to try out Skype but haven't wanted to [...]

You’ll need a DVD burner and DVD burning software (like Nero). Using free software DVD Shrink, you encode the disc to your hard drive and then burn a new DVD with the contents in what looks like a reasonable number of steps. Using DVD Shrink you can even omit DVD extras to save hard [...]

Video-sharing service YouTube rolls out mobile upload, which lets you post a video via email from your video cameraphone.
Similar to Flickr’s upload by email, set up your YouTube upload by email profile and get a secret email address. Then, take a short video on your phone and send it via MMS to that email [...]