Tonight's must-see: "House"

A scuffle with House lands a gay man with AIDS (Matthew John Armstrong) in the hospital, where he provides the disagreeable diagnostician with a medical puzzle. It's a messy one: The man coughs up blood on Cameron, who begins behaving uncharacteristically.

Unaware of why Cheryl is apologizing to him, Jim knows enough to use her guilt to get out of going to a family wedding.

The competition between teams of reality-TV veterans concludes with the men searching through thousands of pounds of ice, and the women getting spiders dumped on them. Then, after a dangerous car stunt, a $150,000 prize is awarded.

The contestants get their comedy-writing skills tested in an early-morning challenge on Adam Carolla's radio show. Also: two more comics are eliminated.