Finding a new purpose for Andy on the show as Leslie's new friend/employee/Smithers was a smart move. Andy is gold. Both characters named Andy on Thursday night NBC comedy are comedy gold. (Conversely, Alison Brie's Annie on Community is funny while Rashida Jones' Annie is not really.)
Best line was the meta-line when they were looking at the statue:
Andy: "He looks like Ron Swanson. Is that who this is based on?"
April and her boyfriend and her boyfriend's boyfriend made a hilarious comeback. Something I forgot to mention last week was April and the black woman's absence; presumably because they were still in Venezuela. April's back, but is the black woman still with the Venezuelans?
Also, both Parks and Rec and 30 Rock made jokes about how awesome gay Halloween is.
Based on a Harlan Ellison short story, he also co-wrote the script with director L.Q. Jones (much better known as an actor) There is also a graphic novel that continues the story drawn by Richard Corben. I have a copy somewhere...