What are your favourite internet memes?

I am defining an internet meme as a concept, catchphrase or piece of media which spreads, often as mimicry, from person to person via the Internet. A lot of the time it is statical humour; meant to be humorous.

This picture of Fry from Futurama is an example of what I mean. There is also the DR Who “Bowties are cool meme”, the Ryan Gosling “Hey Girl” memes too.

So what are your favourite memes?