While stop motion photography hasn't completely fallen by the wayside, much of the effects that it used to produce has been superceded in film by computer animation. But that doesn't really help someone that wants to make a video of living, breathing people interacting with real objects and can't afford a high-end video or movie camera. Don't despair. Today's SLRs can shoot HD images and photographers like Cesar Kuriyama are stringing together stills to produce videos, much like old school stop motion.
A lighting designer and animator in New York, Kuriyama shot 45,000 photographs and stiched them together to make a music video for the band Fat City Reprise. He used a Nikon D200, shooting in approximately 60 shot JPG bursts while the people being photographed moved in slow motion.
Check out the result here: