  Streaking of photoelectrons has long been used for the temporal
characterization of attosecond extreme ultraviolet pulses. When the
time-resolved photoelectrons originate from a coherent superposition of
electronic states, they carry an additional phase information, which can be
retrieved by the streaking technique. In this contribution we extend the
streaking formalism to include coupled electron and nuclear dynamics in
molecules as well as initial coherences and demonstrate how it offers a novel
tool to monitor non-adiabatic dynamics as it occurs in the vicinity of conical
intersections and avoided crossings. Streaking can enhance the time resolution
and provide direct signatures of electronic coherences, which affect many
primary photochemical and biological events.
