I couldn't help but post something on this, TANGO.
I love it, I absolutely love it. I love everything about it. I love the music, I love the movement, I love the meaning, and maybe without realizing it, I also love it precisely because it comes during my favourite time-period, the 1920s. Argentina, must have been a pretty fascinating place in 1920s to give birth to such a beautiful, elegant, meaningful, and dignified art.
The following are the videos that I love the most out of the ones that I could scourge on youtube, of course). Now, tell me, isn't this divine?

My favourite couple, these two are just incredibly talented, how the heck do they manage to do what they do, is beyond me.
http://www.youtube.com/watch?v=gEe2j43X-Ms

http://www.youtube.com/watch?v=f6MT84basqo&feature=related

The Tango Lesson (I wanna see ittttt) - http://www.youtube.com/watch?v=rj6rCbUcnxc&feature=related

Nice choreography
http://www.youtube.com/watch?v=cFeAwZslAHY&feature=related