Meet Zach Sang! Our very own host and guide to all things WWDOP!

Zach checks out the obstacle course our Nick Stars will face later today!

The cast of Victorious and iCarly get ready for the basketball game to end all basketball games!

Zach meets up with the BTR boys after their WWDOP rehearsal.

Daniella Monet and Matt Bennett tell us how they keep active and healthy while they're shooting Victorious.

Keke Palmer tells us about her upcoming Nickelodeon movie "Rags", and teaches us how to hula hoop!

Cymphonique Miller and Max Schneider tell us a little bit about their new show "How To Rock".

Hey it's Fred! Actually, it's Lucas Cruikshank. He tells us about the obstacle course and the perks of getting slimed!

NFL star and commentator Damien Woody talks about his favorite Nick shows and more during the 2011 Worldwide Day of Play.

Taylor Gray of Bucket and Skinner swam through buckets of slime to finish the Worldwide Day of Play obstacle course!

Liz Gillies breaks down the obstacle course and her climbing skills.

We had a great time in D.C.! Thanks to everyone who came out and played with us all day long!

The Power Rangers Samurai team shows us how they get active with some killer moves!

Supah Ninja star give us her take on the Worldwide Day of Play obstacle course!

Carlos Knight explains the difficulties of getting through the tires in the obstacle course.