My favorite, 1083 N Hillcrest, originally designed by Neff for Groucho Marx in 1956 is up for sale now for just under 13 million:
Pickfair, built in 1920 for Douglas Fairbanks and Mary Pickford, is one of the most famous estates in Beverly Hills. The latest news is that The Michael Jackson Museum Foundation is forming to purchase the estate (in 2008, was listed for 60 million) and turn it in to a permanent MJ museum:
Neff lived in San Marino and developed many of the historical homes that line the streets in Pasadena:
Although Neff is most known for his elaborate homes designed for the Southern California elite, he was also interested in solutions for the housing shortage in the 20's and 30's. He created the Bubble House, utilizing an inflated Goodyear balloon covered with mesh and fixed with concrete as an inexpensive mass housing solution. Although they were extremely cost effective, the idea never caught on in the US: