Dennis Hopper's Venice, Calif. Estate Hits Auction Block

The opening salvo in late actor Dennis Hopper's estate battle is set to go, as his massive SoCal mansion hits the auction block Friday. The 15,500-square-foot property where he lived with his estranged wife is expected to fetch around $6.2 million.

The notoriously unpredictable actor, who starred in such classics as "Apocalypse Now" and "Blue Velvet" (as well as such critically-panned duds as "Super Mario Bros.") succumbed to a long battle with prostate cancer last May at the age of 74. However, his highly publicized divorce from his fifth wife, Victoria Duffy, was still in the works at the time of his passing, leaving ownership of his estate up in the air.