Saturday Themeless…… but a few too many blocks for a themeless: IMO [see 25-Across] 
 Candy vehicle
Candy vehicle   SCTV [John Candy starred in “Second City TV”]
Gone crackers?   HIHOS [never knew they were here --- were they crackers or cookies?]
Initial response to a yenta   MYOB [mind your own business, in texting]
Part of PSI?: Abbr.   LBS [are the ? and Abbr. needed?]
Heavy hitter   SLEDGE [I thought baseball, naturally]
Business intro.?   AGRA 

Jewish cast today with BOBDYLAN, Roman Polanski, yenta, and GELT 
 TETES
TETESRATING:   
 
 
 Three grins = Excellent: Loved it; Two grins = Good: Enjoyed it; One grin = Satisfactory: A bit bland for my taste; One teardrop = Unsatisfying: No fun