Robert Plant - Guilty!
Of being deep and meaningless. Of using "unorthodox" ways of doing business. Of dabbling in diabolic wizadry and sundry misdemeanours of the flesh. And of making some of the most durable, thrilling and influential rock records of the last 20 years. Only now, four albums into a solo career, has Robert Plant finally come to terms with the legacy of Led Zeppelin. Tom Hibbert takes confession