The events of "Pirates Vs. Ninja" are referenced. It's also revealed that all office buildings destroyed in said episode were finally repaired in this episode.
Jay has a Samurai wrist accessory for communicating device, but in blue.

The hidden room in Gordon's house has a Jay Shrine with many scenes from the series. He also has a cowboy, viking, and spaceman outfits.

The Wu-Cru symbol appears on one of the voltage signs.

NGTV again.

In one scene you can see a sign for Sitar Legend.

The fighting arena appears again, and like last time, it has some people from Blackout.