THEME: "Oh, No!" title means there is a missing O which changes the meaning of a phrase
GOOD ONES: "$%*#& computer!"? CRASH C(O)URSE
Short anchor? C(O)URT REPORTER [I thought it was Bob Costas]
Spillane's inspiration? MICKEY M(O)USE
Like PETA members? DOWN ON ALL F(O)URS
Well-mannered sisters? PROPER N(O)UNS
Sugar daddy? F(O)UNDING FATHER
Way up HIGH [as in "way up there"]
Takedown expert? STENO [I thought judo, etc.]
Flash mob? PAPARAZZI [indeed---that's why they should be illegal]
Mug at a bar STEIN [I thought "goon"]
Batting organ EYE
Chain with popcorn LOEWS [seems my granddaughter had one]
One whose efforts were feudal SERF [not "futile"]
BTW: Prior to A.D. BCE [I really dislike this term, meaning "before the common era." Was the previous era uncommon? What then does A.D. stand for in this lexicon? Silly anti-Christian jargon.]
More than dull DRY AS DUST [never really understood this simile --- here DRY is bad, but weather-wise and oenologically it's good --- so what makes dry a pejorative?]
ESSA is only Italian and
ETE only French.
RATING:

[it will be hard to top this one]
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun