Now Duke is turning his attention to selling his award-winning house. Listed at $7.85 million, his home in the Hollywood Hills won the AIA award for best residential design in 2007 and was recently featured on the cover of Architectural Digest. It is also for lease at $24,500 a month.

The modern home, designed by XTEN Architecture, is set on a promontory and seems to float above the city. The 4,800-square-foot house has three bedrooms and 3 1/2 bathrooms. There are an additional 6,500 square feet of usable outdoor terraces, decks and gardens and hundreds of feet of electric glass walls that open to them: Push a button, the walls retract and the room is open to the outdoors. Sure beats the bother of opening a window.

Nobody penny-pinched on the materials: chiseled granite countertops, seamless quartz floors, rift oak and plaster walls, stainless-steel appliances and mirrored finishes.

And you can tell there is a designer in the house. The outdoor dining area, built into the hillside, has tables and loungers constructed of natural driftwood - an ornate chandelier hangs from a tree. The pool is made of mirrored-glass tiles, and there is a meditation-yoga garden.

There may be just one man whose name flashes across your computer screen more than President Obama's, and that's John McAfee, whose anti-virus software lets you surf the Net without a care in the world.

McAfee just lowered the price on his Molokai, Hawaii, home to $3.7 million from $4.9 million. The four-bedroom, five-bathroom, newly constructed 5,796-square-foot house sits on 5.3 ocean-front acres. The 1,262-square-foot master suite includes a floor-to-ceiling Molokai rock fireplace and entertainment center. The master bathroom has a large Jacuzzi tub with ocean views, a glass block shower, his and her sinks and a hickory-lined linen closet; there's also a 528-square-foot covered deck off the master suite with ocean views.

The ocean-view great room has sliding glass doors that open onto a covered deck. The gourmet kitchen has top-of-the-line stainless steel appliances and custom granite countertops. The floors are of cumaru Brazilian teak, Italian porcelain tile and bamboo.

The property, in the Popuhaku area, is entered through a 20-foot-tall Japanese gate house, "guarded" by Afghan teak horses. The perimeter fence includes Molokai rock columns and tight cedar panels. A large circular driveway winds through Kiawe forest into the 1,600-square-foot porte-cochere.

British-born McAfee was the first to distribute anti-virus software using the shareware model. He is also considered a pioneer of instant messaging. His company, McAfee Software Inc., went public in 1992, and he is the author of books on computer viruses and yoga.

Marlon Brando once owned and lived in a home in Los Angeles' Sherman Oaks neighborhood that is now listed at $2.8 million. The owner of the property is Maria Cristina Ruiz, Brando's former housekeeper and mother of his three youngest children.

The single-level custom home has five bedrooms and four bathrooms. Built in 1939, it has 3,027 square feet. There is a detached guesthouse, a north-south tennis court, a free-standing sauna and a pool with a one-of-a-kind diving board that Brando himself built for his children.

Brando died in 2004 at age 80 of lung failure. When he died, his estate was estimated at $21.6 million, which included $18.6 million in real estate.

This article appeared on page P - 3 of the San Francisco Chronicle