Space-age picture phones, Linux-style.
Who would have known that PCs would usher in the futuristic era promised in the 1950s? With the advent of PC-based phone calls combined with video, you can have your picture phone, although without a cool-looking retro enclosure. And, you can have all this on Linux. Still no personal jetpacks, though.
The latest entry into the video phone arena is Ekiga, which focuses on video communications.