DS9 first because it's the sacredest cow:
"Look through the scope, what do you see?"
"I see pictures of people smiling."
"The killer wanted to destroy emotion. The killer must be vulcan!"
(Biggest facepalm moment in all of Trek)
Every scene where people are inexplicably obsessed with Vic Fontaine
WINGS OF FIRE! WINGS OF FIRE! WINGS OF FIRE!
(If the planet's people are that stupid they were probably better off with the farengi.)
Native Americans were influenced by aliens and that's why they're so spiritual
Data can get drunk Wesley singlehandedly takes over the ship
Tasha drug speech
We can't save these people from extinction because a thousand years from now one of them might be the next Hitler
We are different! I have the black on this side of my face!
I am Ares!
In the 29th century every six year old can contact the past from his school desk.
Invent prime directive in five minutes and decide based on it to let an entire species die.
Cure borg assimilation in five minutes then forget it exists
Followed closely by every other scene in the series