s ▁first ▁appearance ▁on ▁the ▁Ben ny ▁program , ▁he ▁was ▁called ▁for ▁another ▁radio ▁role ▁on ▁the ▁show , ▁this ▁time ▁as ▁a ▁wait er ▁in ▁a ▁restaurant ▁serving ▁the ▁cast . ▁In ▁the ▁sketch , ▁Ben ny ▁compl iment ed ▁Anderson ▁on ▁his ▁extensive ▁knowledge , ▁to ▁which ▁Anderson ▁replied , ▁" I ▁don ' t ▁know ▁where ▁Al bu quer que ▁is ". ▁During ▁this ▁appearance , ▁Anderson ▁made ▁himself ▁at ▁home ▁on ▁the ▁program , ▁joining ▁in ▁the ▁J ell - O ▁commercial ▁with ▁the ▁regular s ▁of ▁the ▁cast . ▁A ▁few ▁weeks ▁later , ▁Anderson ▁was ▁called ▁back ▁once ▁more , ▁now ▁for ▁the ▁part ▁of ▁a ▁" color ed ▁fellow " ▁who ▁had ▁a ▁financial ▁disag re ement ▁with ▁Ben ny . ▁ ▁The ▁Ben ny ▁show ▁received ▁a ▁large ▁amount ▁of ▁mail ▁about ▁Anderson ' s ▁appearances ▁on ▁the ▁radio ▁program . ▁Ben ny ▁decided ▁to ▁make ▁him ▁part ▁of ▁the ▁cast ▁as ▁his ▁but ler ▁and ▁v alet , ▁Ro chester ▁van ▁Jones . ▁Ne ither ▁Ben ny ▁nor ▁Anderson ▁could ▁recall ▁how ▁they ▁came ▁up ▁with ▁the ▁name ▁of ▁Ro chester ▁for ▁Anderson ' s ▁character . ▁Anderson ▁always ▁cred ited ▁Ben ny ▁for ▁the ▁in vention ▁of ▁the ▁Ro chester ▁van ▁Jones ▁name , ▁saying ▁that ▁the ▁name ▁was ▁copy right ed ▁and ▁that ▁Ben ny ▁later ▁sold ▁the ▁rights ▁to ▁him ▁for ▁a ▁doll ar . ▁When ▁Anderson ▁became ▁a ▁regular ▁member ▁of ▁the ▁Ben ny ▁show ▁cast , ▁he ▁became