If you buy a print version of the SF Chronicle today, you will find pop-out 3D glasses and a full-page 3-D ad (page A3). The three-dimensional magic shows a man's body and head slightly floating above a Verizon ad.
No online version available.
Is this a sign of more visual magic to come? Possibly. As SF Peninsula Press Club notes, "On June 5, England's Sun newspaper printed a special 3D edition to commemorate the World Cup games, and it contained 3D ads and editorial."