Abstract
I will discuss the features of Sudakov resummation for jet
observables used in collider phenomenology, and I will describe a general
method to compute predictions to next-to-next-to-leading-logarithmic order.
This approach does not require any observable-dependent factorisation theorem
and therefore it can be applied to a wide class of jet observables. I will
discuss some applications as well as comment on work in progress and future
developments.