' ▁season ▁nine ▁episode ▁" Tr ash ▁of ▁the ▁Tit ans ", ▁which ▁a ired ▁on ▁April ▁ 2 6 , ▁ 1 9 9 8 , ▁was ▁dedicated ▁to ▁her ▁memory . ▁Executive ▁producer ▁Mike ▁S cul ly ▁said , ▁" It ▁just ▁seemed ▁like ▁the ▁right ▁thing ▁to ▁do . ▁Every one ▁here ▁was ▁surprised ▁and ▁sad den ed ▁by ▁her ▁death ." ▁ ▁Direct ing ▁and ▁anim ating ▁The ▁episode ▁was ▁directed ▁by ▁Mark ▁Kirk land , ▁who ▁was ▁intr igu ed ▁by ▁the ▁story ▁because ▁he ▁had ▁not ▁seen ▁many ▁television ▁episodes ▁about ▁veget arian ism . ▁The ▁designs ▁for ▁Paul ▁and ▁L inda ▁McC art ney ▁are ▁unusual ▁for ▁The ▁Sim ps ons ▁in ▁that ▁the ▁characters ▁have ▁brown ▁and ▁blue ▁ir ises , ▁respectively . ▁Most ▁The ▁Sim ps ons ▁characters ▁simply ▁have ▁black ▁sp ots ▁in ▁the ▁cent ers ▁of ▁their ▁eyes . ▁ ▁In ▁one ▁scene ▁of ▁the ▁episode , ▁H omer ▁sp ray s ▁two ▁bott les ▁of ▁l ighter ▁fluid ▁onto ▁his ▁gr ill , ▁causing ▁view ers ▁to ▁anticip ate ▁an ▁explos ion ▁when ▁H omer ▁throws ▁a ▁match ▁on ▁it . ▁When ▁he ▁does ▁release ▁the ▁match , ▁however , ▁the ▁gr ill ▁bare ly ▁ign ites . ▁A ▁similar ▁scene ▁appears ▁in ▁an ▁older ▁episode ▁of ▁The ▁Sim ps ons , ▁" Tree house ▁of ▁Hor ror ", ▁although ▁in ▁that ▁episode , ▁H omer ▁uses ▁a ▁single ▁bott le ▁of ▁l ighter ▁fluid ▁and ▁causes ▁an ▁explos ion .