ercent do woodchucks chuck wood?(high-pitched laughter) man: hey you dang woodchucks, quit chucking my wood! vo: geico. fifteen minutes could save you fifteen percent or more on car insurance. aren't absorbed properly unless taken with food. he recommended citracal. it's different -- it's calcium citrate, so it can be absorbed with or without food. also available in small, easy-to-swallow petites. citracal. >> smith: the news landed with a thud on front doorsteps all over america this week. home values are falling again-- the dreaded double dip. if you want to know why, look no further than the house down the street, the one that's in foreclosure. foreclosed homes selling at bargain-basement prices are dragging the market down. bill whitaker in los angeles, now, on what some homeowners are doing to fight back. >> reporter: you're looking at a sign of the times-- people lined up, some overnight, thousands filling l.a.'s massive shrine auditorium desperate to hold onto their houses. >> reporter: you're 30 days behind,