From McSweeney’s:

REVIEWS OF DVDS THAT MAY OR MAY NOT BE PIRATED BUT WERE DEFINITELY BOUGHT ON THE STREET IN SHANGHAI FOR ABOUT A DOLLAR…
Sin City

Obtained: Guy standing on Maoming Road, next to guy selling puppies
Price: 8 RMB

In several climactic scenes, including the Jessica Alba dancing segments, the anvil-headed guy in front of the cameraman gets up to go to the bathroom. His big flat head blots out a good 10 percent of the screen. Damn you and your excitement-sensitive bladder, anvil-headed guy. We’re looking for you. We’d recognize that jug anywhere.
Ten minutes in, the DVD starts skipping. Repeated cleanings with bottom of T-shirt fail to improve performance. It plays normally again at the 21-minute mark, leaving us confused about where the Bruce Willis character went. After the movie is over, we’re still not sure.
Film also ends with credits from Shredder.