CHICAGO – When critics talk about the most influential films of the ’70s, they too often forget a little flick that became a phenomenon, Robert Clouse’s “Enter the Dragon,” recently released in a gorgeous box set with a new HD transfer, new special features, and new collectible items. Bruce Lee’s most beloved work still influences the Martial Arts genre today and gave birth to an entire cultural shift as cinema, particularly action films, became more influenced by Asian styles. The Blu-ray is a beauty with new special features about the making of and importance of “Dragon” that even those who have seen the flick a hundred times on cable will find enlightening.