With the exception of LG's anomalous LD950 LCD panel-which requires merely the same cheap polarized glasses found in most 3-D movie theaters today-every consumer 3-D television in the market place uses active LCD glasses to achieve the optical illusion of depth. Turning each eye's lens dark and transparent again 60 or so times per second-and alternating that with another 60 or so "winks" per second in the other eye-active 3-D glasses give the relatively slow brain the impression of depth form the flat screen. You'll know that 3-D TV has really caught on when high-end eyewear designers start making frames for active 3-D glasses that look as flattering on the face as they make the television's frame look to you.