THEME:   intrusive AU (good as gold)   
GOOD ONES:     Mythological figure who touch {theme phrases}   KING MIDAS   
Extraordinary northern bird?   SPECIAL AUK [Special K is a cereal brand]   
Alaskan insects?   JUNEAU BUGS   
Noodle   BEAN [are these "brain foods"?]    
 Top story
Top story   ATTIC [not the lead story or even a feature story, as in 11-Down, because features don't lead in "journalism biz"]   
Sprinkling on French fries?   SEL [ it's on the edge but it's clever]   
Cab driver?   TRUCKER   
Sun block   CURTAIN         
BTW:   Statistician's challenge   
BIG DATA [not a familiar expression any more than is "blue car" so it is an inappropriate entry, but even if it were, a statistician is not challenged by large numbers  --- I suspect the original entry was BIG PAPI]      
Plot component   ACRE [most are less than an acre so I'd modify the clue with "at times"]      
At last night's (Saturday) dinner party a Microsoft engineer used the term Big Data, not in the sense of its being difficult to handle but as a new computing concept.  So the entry wasn't as bad as I made it sound.  1/25   RATING: 
 
  
  
   Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun