Roommating: Episode 11: Sister

Joel and Erin babysit for a friend's dog.

Two roommates compete over who's the better dominatrix.

Erin gives Joel's depressed girlfriend an unwanted makeover.

Erin has been mugged and Joel uses his Nintendo Wii to create a composite sketch of the likely assailant.

Erin discovers Joel has been looking at porn on her computer.

Erin and Joel deal with a seemingly friendly neighbor.

Erin and Joel find conflict when they fall in love with the television show "The Wire."

Joel's personality transforms after volunteering for the Obama campaign.

Joel discovers Erin was once in the Army.

Erin and Joel deal with the fallout of throwing a huge party.

Erin buys a gun for safety.

Erin's sister comes for a visit.