NEW YORK, N.Y. (WPIX) -- You may have heard of criminals leaving their wallets at crime scenes. In a new twist, New York City police say a subway vandal who calls himself Poster Boy actually posted a video of himself on YouTube committing the very crime he's being accused of -- damaging ads in the subway.

The artist has been identified as Henry Matyjewicz. The video shows the 27-year-old lifting a big demon face from a Subway restaurant advertisement and placing it over the face of actress Toni Collette.

Matyjewicz apparently considers his work a big improvement over what's already on the posters. "It's good, because you're almost killing two birds with one razor," Matyjewicz said on the video. "You're taking on these ads that are everywhere, and you're creating something a little more creative."

For months, investigators had been trying to track Matyjewicz down. He was finally arrested Saturday, when a tip led investigators to a showing of his work in SoHo. Poster Boy is free on $750 bail.

Police say they overheard Matyjewicz talking about his work. They quoted him as saying he "didn't see cutting out posters as a crime."

That's not how the NYPD looks at it.  They regard any acts classified as vandalism a crime.