I went on a YouTube rampage earlier today that landed me on a throwback video of 2PM doing a mirrored dance rehearsal for their single, "I Hate You," back when Jay was still a part of the group. What I've always loved about 2PM was their humor, and their ability to be professional yet always hilarious. Watch it here:

There's something entrancing about watching Sistar dance in a studio without the bright lights and camera angles. It may be that we realize their legs are longer than life and we start to feel a sting of envy and jealousy right through our blood stream causing us to feel complete entrancement. Oh, is that just me?

Why does 2NE1 have to be so perfect? Even in a simple studio space their swag is off the charts.

I love watching Psy dance, it's addicting. It amazes me what a normal looking guy he is when he's out of his signature suit and sunglasses.

I'm not a huge fan of EXO but I can't deny that their choreography to "Wolf" was one of the best and most creative ones I've ever seen!

Which one is your favorite off of our list?