The Google Chrome Cast delivers what it promises.

From initial skepticism has become a pleasant surprise. Films and videos, even in HD quality run from trouble-free.
This requires an average PC or laptop which has at least 2GB of memory, a faster Internet access and a WLAN. Video or sound dropouts may occur if the chromium Cast stick from wireless reception, to the rear of the TV is too shielded. That may be true at a greater distance from the router.