Academy Award-winning actress Meryl Streep put her Los Angeles mansion up for sale this week, and is looking to cash in on the recent upward trend in California home prices.  Streep bought the property last February for a tidy $4.5 million, but listed the home this week for a staggering $6.75 million.  That'll be a hefty 50 percent profit for the legendary actress if she gets what she's asked for.  The median home price for Southland homes sold in March reached $400,000, marking a year-over-year improvement of just under 16 percent.