Brian Greene's book, The Elegant Universe, describes this really beautifully. The TV version of the book doesn't use the phrase, but speaks of the violent "quantum jitters" as these smallest particles (or strings, according to String Theory) come and go.
This 3 hour miniseries can be watched here. The jitters of space-time are described in the second episode, though if you've no background in physics I would suggest watching the show from the beginning.
The book is wonderful, but not for the science averse. The TV show should have been that wonderful, if not more so! But I'm afraid Greene is just a bit too much like an overly enthusiastic puppy and it sort of grates a bit... The show, however, is on the short side... ;-)