Clue: Blockbuster about Chinese locksmith with gold filling (6,6)
Answer: CASINO ROYALE
Explanation: Definition: Blockbuster
 CA(abbrev. for "circa"/about/around the time of a particular year) + SINO-(prefix denoting something Chinese/related to China) YALE(Linus Jr., inventor of the pin tumbler lock and co-founder of the Yale Lock Manufacturing Company) **containing**(with … filling) OR(the colour gold in heraldry).
Defn: … movie … take your pick: