You'd think "Lucy! you got a lot of esplaining to do" would be in at least the top five.

That or "Lucy, I'm home."

But as defined above a catchphrase is used by the mainstream. I don't hear a lot of people saying either. It would be at the top of a 20 memorable lines list, though.

OMG I can't stand people using "How YOU Doin'?" from Friends, especially when it's used as a greeting. UGH

Resistance is futile (The Borg; Star Trek : TNG)
Don't have a cow (Bart Simpson; The Simpsons)

Shrinkage!!

"Nanoo, Nanoo" Spelling? Name the show.

Seriously? Anyone that doesn't know that needs to go back to tv watching 101.

Very poorly researched. There was a ton that made it where I scratched my hair wondering why.

Lets put it this way ... if 'Yadda Dabba Do' isnt on the list and 'Lets Hug It Out' is, then somethings VERY WRONG!

First off, isn't it "Yabba" apparently you aren't even all that familiar with it. Second:
lets try this again:

Catch phrase: A phrase in wide or popular use, especially one serving as a slogan for a group or movement.

Seriously, when was the last time you heard anyone blurt out Yabba, Dabba Do in a conversation?

Should "The truth is out there" be ahead of "Trust no one?"

I don't think so.

Where's "Shave my poodle?"

I say that every night to my wife.

Seinfeld was on top with "Yada, Yada, Yada". I know ten other phrases from Seinfeld that are better than that.

1. "Not that theirs anything wrong with that?"
2. "No soup for you!"
3. "Serenity now!"
4. "It's the Summer of George"
5. "Hello, Newman!!"
6. "Are you spongeworthy?"
7. "Get out!" (followed by a shove from Elaine)
8. "She had man-hands"
9. "It was a Junior Mint"
10. "This book has been flagged!"

11. I think it moved.

See post 59.