With its favorable balance of accuracy and affordability, time-dependent density functional theory (TD-DFT) has become the method of choice for excited-state calculations in molecules with more than 10-20 atoms. Early applications of TD-DFT noted egregious failures for Rydberg and charge-transfer (CT) excitations, ultimately traceable to incorrect asymptotic dependence of the exchange-correlation potential, υ xc . That behavior can be rectified using long-range corrected (LRC) exchange functionals,