In the Tv series "Gilmore Girls" we can see Sherilyn Fenn playing two different roles: First, we see her as Sasha, an on-off partner of Jess' real father, then again as Anna - Luke's old girlfriend who, unknowingly to him, is also a mother of his child called April.
What's even more interesting, both characters are quite similar: both are single mothers raising "tween" daughters and both daughters are smart but eccentric girls (Sasha's girl is seen briefly while reading a book in a closet while the first appearance of April is during her "who's my daddy?" school project), both are portrayed as sort of artists/free spirits, even their houses look similar (minus the dogs that Sasha rescues). You can't stop having a feeling, that director reused not only an actress but also the character.
Was there any reason for that? Was that supposed to suggest that Luke and Jess father (whom Luke hates) are not so different?