Sealab 2021, and Aqua Teen Hunger Force,were both on which cable networks, late-night programming block?
Sealab 2021:  It was shown on Cartoon Network's late-night programming block, Adult Swim. Aqua Teen Hunger Force: Aqua Teen Hunger Force (also known by various alternative titles) is an American adult animated television series created by Dave Willis and Matt Maiellaro for Cartoon Network's late night programming block, Adult Swim.
Cartoon Network