Insanely consistent and durable forward since his 6th year.
Has managed 18 games at least per season (max 26, typically 24) for 13 straight years (will be 14 after this year). Availability is the most important ability in footballers, particularly spine/key position players, and Geelong have been able to build around his reliability.
He's been the vanilla of forwards across that time, perhaps only 'good' for much of his run rather than dominant, but extending his career into an era where there was a complete lost generation of talls (obviously Boyd, Hogan, McCartin, Patton, and you can add Cameron/Lynch/Wright wasting away on expansion teams and Daniher's injury interruptions0 who should have ripped the mantle of 'best big' and made it their own, his reliability and consistency is astonishing.