The appeal of superbikes is that they're finely-tuned versions of regular road-going machines, with four-cylinder 1,000cc engines delivering extraordinary power. Unlike Formula 1, it's easy to relate to the kind of bike that might zoom past you in the outside lane of the M4. Shane 'Shakey' Byrne has already secured his second BSB title and will want to end the season with a double success at his local circuit. However, Leon Haslam has won five of the last seven races and should ensure it won't be one-way traffic. Sunday will include a 'riders meet the fans' session with MotoGP star James Toseland returning to the scene of his stunning double World Superbikes triumph last year to sign autographs. Whether you're a dedicated petrolhead or a casual motorsports fan, two-wheeled action doesn't come much better than this. Andrew Shields