▁from ▁singer ▁to ▁Master ▁of ▁Cer emon ies ▁at ▁the ▁Ro xy ▁Theater ▁and ▁later , ▁Radio ▁City ▁Music ▁Hall . ▁ ▁Career ▁Dan ▁played ▁many ▁roles ▁on ▁Broadway ▁such ▁as ▁Fred die ▁E yn s ford - H ill ▁in ▁My ▁Fair ▁Lady ▁( 1 9 5 6 ). ▁ ▁Res in ▁appeared ▁in ▁the ▁original ▁off - B road way ▁production ▁of ▁Once ▁Upon ▁a ▁Mat tr ess , ▁and ▁continued ▁with ▁the ▁show ▁when ▁it ▁made ▁a ▁successful ▁move ▁to ▁Broadway . ▁ ▁His ▁stage ▁produ ctions ▁include ▁Don ' t ▁Dr ink ▁the ▁Water , ▁On ▁a ▁Clear ▁Day ▁You ▁Can ▁See ▁Fore ver , ▁F ade ▁Out ▁- ▁F ade ▁In , ▁and ▁Young ▁A be ▁Lincoln . ▁ ▁Res in ▁is ▁most ▁famous ▁for ▁his ▁movie ▁role ▁as ▁Dr . ▁Be eper ▁in ▁the ▁comedy ▁film ▁C addy sh ack ▁( 1 9 8 0 ). ▁ ▁His ▁other ▁movie ▁roles ▁included ▁W ise ▁Gu ys , ▁The ▁Sun sh ine ▁Boys , ▁The ▁Private ▁Files ▁of ▁J . ▁Ed gar ▁Ho over , ▁The ▁Happy ▁Hook er ▁( 1 9 7 5 ) ▁and ▁other ▁films . ▁Res in ▁played ▁the ▁role ▁of ▁a ▁young ▁Richard ▁N ixon ▁in ▁the ▁ 1 9 7 2 ▁par ody ▁film , ▁Richard . ▁ ▁His ▁television ▁career ▁included ▁a ▁CBS ▁show , ▁On ▁Our ▁O wn ; ▁the ▁soap ▁opera ▁Edge ▁of ▁Night ; ▁Lo vers ▁and ▁Fri ends ; ▁David ▁F rost ▁Review ; ▁and ▁an ▁N