In Madison, ANTIQUES ROADSHOW visits a one-of-a-kind Wisconsin wonder with appraiser Noel Barrett: The House on the Rock, built on and around a chimney rock and filled to the rafters by its eccentric owner with antiques and collectibles. Highlights include an intricately carved turn-of-the-century Japanese bamboo sculpture; the happy marriage of Edwardian natural pearl earrings elongated with Art Deco pendants; and a massive oil painting by noted 19th-century California painter Thomas Hill, purchased at a church rummage sale for $25 and valued at $60,000 to $80,000.