▁Out standing ▁Gu est ▁A ctor ▁in ▁a ▁D rama ▁Series . ▁ ▁Some what ▁coinc ident ally , ▁before ▁this ▁role , ▁It zin ▁played ▁a ▁President ial ▁C andid ate ▁in ▁a ▁commercial ▁for ▁che ese ▁products , ▁who ▁was ▁de emed ▁a ▁" do of us " ▁for ▁not ▁lik ing ▁che ese . ▁ ▁In ▁ 2 0 0 7 , ▁he ▁made ▁a ▁guest ▁appearance ▁as ▁William ▁Ad ama , ▁Dick ▁T racy , ▁and ▁a ▁police ▁officer ▁at ▁R andy ' s ▁Hall owe en ▁night ▁in ▁an ▁episode ▁of ▁Rob ot ▁Ch icken . ▁ ▁It zin ▁has ▁held ▁rec urr ing ▁roles ▁on ▁popular ▁TV ▁series ▁such ▁as ▁Fri ends ▁as ▁The odore ▁Hann igan , ▁father ▁of ▁Mike ▁Hann igan , ▁Mur der ▁One , ▁NC IS , ▁and ▁The ▁M ental ist . ▁He ▁played ▁the ▁head ▁of ▁the ▁unit ▁in ▁the ▁latter ▁for ▁ 1 3 ▁episodes , ▁before ▁leaving ▁to ▁return ▁to ▁ 2 4 ▁for ▁its ▁final ▁season . ▁It zin ▁also ▁appeared ▁on ▁Night ▁Court , ▁Mat lock , ▁Di agn osis : ▁Mur der , ▁J ake ▁and ▁the ▁F at man , ▁ ▁The ▁O . C ., ▁B ever ly ▁Hills , ▁ 9 0 2 1 0 , ▁Jud ging ▁Amy , ▁Boston ▁Leg al , ▁C SI : ▁Crime ▁Sc ene ▁Investig ation , ▁The ▁Pract ice , ▁The ▁P ret ender ▁and ▁the ▁short - l ived ▁science ▁fiction ▁series , ▁Fire fly