Oh dear, I have a lot...
Horror films - girl is downstairs in her own house, that she knows the layout of. It has at least 3 doors and 10 windows she could climb out of but she always runs up the stairs where there's no escape.
Drinking out of empty cups
Going on a first date, something happens at their house and the character has the new dates address memorised "we need an ambulance to 3156 Mayfair drive and 4th, apartment 2C"
Only ever see poor people eat cereal for breakfast. If you have money you have either eggs or pancakes.
Couples kissing as soon as they wake up.
Sex scenes in general - it's kissing, ripping clothes off, sex. No foreplay, no awkward 'wait til we get a condom,' or wait 10 minutes while I undo the stupid strappy sandals and peel off my skintight jeans. And it always works, no moving to get more comfortable etc even when he's 6"3 and she's a foot shorter.
The morning after, there are always enough sheets on the bed for her to wrap in one and wander off.
No one closes their curtains.
Women waking up with perfect make up and hair.
Everyone living in huge houses, regardless of job etc. Unless you're the token poor person, then you live in a bedsit.