Chucho Avellanet diversified, and by the 1980s, he was as known for his acting as he was for his singing. Having signed up with "Canal 2", he was able to explore his ability both in the show hosting and acting fields when he hosted, alongside Lissette Alvarez, the popular "El Show de Chucho y Lissette". He also hosted "Senoras y Senores" and "Con Chucho Avellanet" before finally settling on "El Show de Chucho". Avellanet also performed comedy on "El Show de Chucho", participating in the show's comedy segment. In one particularly memorable comic chapter, he screamed, "May the roof fall on us if I'm lying!" and the roof then "crashed down" on him and his guests. He also participated, with Lissette, in a famous Schaefer Beer commercial, where he sang the jingle "Cerveza Schaefer es la mejor cuando se toma mas de una" ("Schaefer is the one beer to have when you're having more than one"). During the filming of the commercial, the boat they were on was rocked by a submarine of the United States Navy passing below it; the experience made a lasting impression on him, which years later led him to support the cause of the people of Vieques in their demands to have the Navy vacate their bombing range on Vieques and Culebra.