Suzanne Shepherd, who played Karen's mother in GF, plays Carm's mother. The guy who played "the Pittsburg connection" ("Wanna see helicopters?") in GF played the restaurant guy that Richie Aprile crippled after he got out of prison. Vito Antuofuermo, who was someone who Tommy greeted at the Copa, was in one "Sopranos" episode as, I think, a garbage contractor.