Down With Love is an affectionate parody of 50s/60s sex comedies, specifically Pillow Talk and Lover Come Back (both starring Doris/Rock/Tony) and Sex and the Single Girl. Tony Randall cameos in his final role. 

Intolerable Cruelty is inspired by the comedy of remarriage subgenre that The Awful Truth is the pinnacle of. 

A witty battle of the sexes with elements of comedies of remarriage, reminiscent of old Hollywood screwballs and sex comedies.