Let's see:

Tony Sirico plays Paulie on Sopranos and was one of the wiseguys when Henry was young in Goodfellas

Michael Imperioli plays Christopher on Sopranos and was Spider in Goodfellas

Maury in Goodfellas (guy with wig shop that Pesci sticks with the screwdriver) was the Hasidic Jew in season 1 that wanted the divorce for his daughter.

Larry Boy in the Sopranos was the guy with the restaurant in Goodfellas.

Carmella's mom was Lorraine Bracco's mom.

Lorraine Bracco is Melfi and Karen Hill.

Who am I missing?