Lady Gaga's Born This Way and Paulina Rubio's Ni Una Sola Palabra.

What about ya?

EDIT: #1 single on Billboard, of course.

JANET - tooo hard to choose just one , but I'll go with Doesn't Really Matter
KATY - Teenage Dream

Female MJ - E.T. (best song ever made)

Katy: Part of me
P!nk: Raise your glass
Rih: Diamonds
Brit: Womanizer
K$: WRWWR

Stronger what doesnt kill you

Katy Perry: E.T
Rihanna: We Found Love

i actually dont like any of my favs #1s lol his #2's >

Poker Face

Crazy In Love

Billie Jean

1st Tier:
The Killers: They don't have one
Big Bang: They don't have one
Death Cab for Cutie: They don't have one
Katy Perry: Too many to choose Probably Firework

2nd Tier:
The Beatles: Too many
Beyonce: Irreplaceable
Usher: Love in This Club
Shakira: Hips Don't Lie, it's her only one anyway
The Carpenters: Please Mr. Postman

3rd Tier:
Take That: They're irrelevant in US
2NE1: They're going to promote in the US soon. Hopefully, a top 100 single
Rihanna: Umbrella
P!nk: So What

Viva La Vida

NGL, KK was my **** though

We R Who We R

Mariah - Love Takes Time

it banged back in the moment, but its nothing to be amazed at. songs like Forever, No Air, and With You are miles better and were actually more commerically successful but never saw the summit.

Super bass, starships, pound the alarm and va va voom