Welcome Pacino's Girl,
You'll find many of us ladies, old and young love Pacino. I too, like the scenes you speak of (Vito & Michael and the Prego/Grazie scene). Both scenes he had a rare smile, making him all the more appealing. I liked too when he was teaching Appollonia to drive, showing a slight humor in his character. Every role he plays IMHO, whether the movie is good or not, he's top notch. Btw, we have had many polls on who's better/cuter, etc Pacino/DeNiro. If I'm not mistaken Pacino gets it all the time, although we all agree Young Vito is "hot" as well.
TIS