Name a heavyweight(s) more exciting than Mike Tyson & a heavyweight(s) more boring than the Klitschkos.
More exciting Fitz Dempsey Louis Baer Marciano Liston Satterfield Frazier Quarry Spinks Shepherd Cooney Cobb Holyfield Bowe Galento Schmeling Shavers Foreman Mac Foster Weaver
Nobody is more exciting than Mike Tyson. I would say Holyfield is second but it's a fairly wide margin. More boring is definitely John Ruiz who put more people to sleep than The Sandman and Ted DiBiase's Million Dollar Dream combined.
More exciting than Mike Tyson - Riddick Bowe More boring than Klitschko brothers - Henry Akinwande (and by HUUUUGE margin) and John Ruiz