▁directed ▁by ▁his ▁Next ▁Generation ▁co - star ▁Jonathan ▁F rak es . ▁That ▁same ▁year , ▁he ▁vo iced ▁himself ▁in ▁the ▁Family ▁Guy ▁episode ▁" Not ▁All ▁D ogs ▁Go ▁to ▁Heaven ". ▁ ▁In ▁ 2 0 1 0 , ▁Sp iner ▁and ▁fellow ▁Star ▁Tre k : ▁The ▁Next ▁Generation ▁actor ▁Le Var ▁Bur ton ▁appeared ▁on ▁T W i T . tv ' s ▁coverage ▁of ▁the ▁Cons umer ▁Electron ics ▁Show . ▁ ▁In ▁April ▁ 2 0 1 1 , ▁Sp iner ▁began ▁st arring ▁in ▁F resh ▁Hell , ▁a ▁com ic ▁web series ▁in ▁which ▁he ▁plays ▁a ▁version ▁of ▁himself , ▁attempting ▁to ▁put ▁his ▁career ▁back ▁together ▁after ▁falling ▁out ▁of ▁the ▁lim el ight . ▁ ▁He ▁appeared ▁as ▁Dr . ▁K ern ▁in ▁the ▁September ▁ 1 2 , ▁ 2 0 1 1 , ▁episode ▁of ▁the ▁Sy f y ▁channel ▁program ▁Al phas ▁entitled ▁" Bl ind ▁Sp ot ". ▁In ▁October ▁ 2 0 1 1 , ▁he ▁appeared ▁as ▁himself ▁in ▁the ▁episode ▁" The ▁Russian ▁Ro cket ▁Re action " ▁of ▁The ▁Big ▁Bang ▁Theory . ▁The ▁day ▁after ▁his ▁guest ▁appearance , ▁it ▁was ▁announced ▁that ▁Sp iner ▁would ▁guest - star ▁in ▁the ▁Young ▁Justice ▁episode ▁" Re vel ation ", ▁providing ▁the ▁voice ▁of ▁the ▁J oker . ▁Sp iner ▁has ▁also ▁guest - star red ▁on ▁the ▁Sy f y ▁program ▁W are house ▁ 1 3 ▁as ▁Bro ther ▁Ad