PSY, Hammer Go Gangnam Style For New Year's Eve Performance: Watch Now!

Yesterday was PSY's 35th birthday, and one the Korean rapper will never forget.

As December 31 drew to a close, PSY and special guest Hammer reprised their epic American Music Awards performance with another joint effort in Times Square.

Watch the awesomely odd couple's Gangnam Style / 2 Legit 2 Quit mashup:

PSY New Year's Eve Performance Ft. Hammer - Gangnam Style

Two main takeaways from their New Year's Rockin' Eve 2013 performance:

1. Hammer is 50! And still has pretty unreal dance moves and pants.
2. PSY's semi-botched English interview was awfully endearing.

If he is retiring the song after this, he went out on a positive note.