Watch “A Very Harold and Kumar 3D Christmas” Movie 

Top athletes know it. Leading politicians know it. And with the opening of “A Very Harold & Kumar 3D Christmas,” stoners will know it too: No matter how good you are at what you do, there’s always someone younger and hungrier coming up, threatening to take your crown.
The film begins, Harold and Kumar are estranged, having each found new best friends. Harold is living a straight-laced married-guy life; Kumar is being Kumar. But a mysterious package brings them together again. The plot, though it hardly matters, involves the search for a new Christmas tree. The film’s director, Todd Strauss-Schulson, takes aggressive advantage of the 3-D format, sending all sorts of things shooting out at the audience: syrup, snow, streamers, a hat and lots of wacky-weed smoke.Those who left the previous film in the series, “Harold & Kumar Escape From Guantanamo Bay,” during the closing credits may think they won’t be seeing Neil Patrick Harris in this one, since he seemed to have been pretty thoroughly shot to death in “Guantanamo.” (A scene after the closing credits showed him shaking off the gunshot wounds.) “N.P.H,” as he’s often called in these films, does indeed return, singing and dancing.