The leader of the free world takes them... at a funeral.

One of the biggest pop stars to ever live poses for them... without much clothing on.

And whatever you want to label Kim Kardashian... she's all about them as well.

We're talking about selfies, of course, a craze that has been sweeping the celebrity nation for months now.

From nearly naked self-portraits to those surrounded by fans, singers, politicians, actors and reality stars all love to get in on the act. So sit back, put that camera down for a minute and toggle through 17 of the best selfies in recent memory:

1. Obama Selfie at Mandela Funeral
Even President Obama is into the act of selfies. At the funeral for Nelson Mandela, no less.
 

2.Miley Cyrus, Shower Selfie
Her tongue isn't reserved for the red carpet only. Miley Cyrus lets it wag here.
 

Rihanna Grabs Boobs
Rihanna ducks under water and grabs her boobs in this selfie. We approve!
 

Kim Kardashian Bathing Suit Selfie
Kim Kardashian shows off her post-baby body in this selfie. It drummed up some serious controvery.
 

Arnold Schwarzenegger is in on the selfie act. He's shirtless in this self-portrait.
 

Wladimir Klitschko Shirtless
Heavyweight champion Wladimir Klitschko is all about the selfie. And all about the muscles, clearly.
 

Kim Zolciak Pregnant Selfie
Kim Zolciak is often pregnant. She shows off her large baby bump in this selfie.
 

Nicki Minaj Sucking Selfie
Nicki Minaj sucks in this selfie. Literally! She has her fingers in her mouth.
 

Rihanna Naked Selfie
Rihanna loves to take selfies. And she loves to be naked in many of them.