From Seinfeld:

the Bris episode:
-"Never go against the family Elaine"-Jerry
-"Look how they massacred my boy" (Jerry pointing to his circumcised thumb)
-"Never take sides against the family, Jerry" (Kramer)

-at the end, Kramer is the new godfather w/ a mom and dad w/ baby kissing his hand....Elaine, Jerry, George are like Kay gettting the door shut on them...with the Godfather music in background.

other episodes:
-Jerry in reference to Newman being in his home
"In my home, Elaine! Where I sleep, where I come and play with my toys."

-George in reference to breaking up or something, "Just when I thought I was out, they pull me back in."

-the new Blistex commercial
2 men in a Vito-like office talking about being a man and protection.

Sorry if these have been mentioned already.

-A Streetcar Named Desire-

Stanley: You want a shot? (offers liquor)
Blanche: No, I rarely touch it.
Stanley: There's some people that rarely touch it, but it touches them often.