|Guess Who's Coming to Marry?|
|Original Broadcast Date||October 14, 1991|
|Written by||Samm-Art Williams|
|Directed by||Ellen Falcon|
|Preceded by||Granny Gets Busy|
|Followed by||The Big Four-Oh|
The Mother of All Battles is the sixth episode of the second season from the television sitcom on The Fresh Prince of Bel-Air, which was originally aired from NBC on October 14, 1991. It was directed by Ellen Falcon and written by Samm-Art Williams.
Tensions spill over just before the wedding of Will's Aunt Janice when Will's mom meets Janice's intended, who is a white man. Though Vivian and Helen are accepting of Frank and the marriage, Vy refuses to accept it, believing that Janice is making a mistake and not thinking about the bigotry she and Frank will face as an interracial couple, as well as their children.
Vy refuses to attend the interracial wedding and forbids Will too but she is eventually convinced to go and Aunt Janice happily marries her fiancee.
- Will Smith as Will "The Fresh Prince" Smith
- James Avery as Phillip Banks
- Janet Hubert-Witten as Vivian Banks
- Alfonzo Ribiero as Carlton Banks
- Karyn Parsons as Hilary Banks
- Tatyana M. Ali as Ashley Banks
- Joseph Marcell as Geoffrey Butler
- Vernee Watson-Johnson as Vy Smith
- Jenifer Lewis as Helen Smith
- Charlayne Woodard as Janice Smith
- Diedrich Bader as Frank
- The title of this episode is a reference to the 1967 comedy-drama film Guess Who's Coming to Dinner, which features a similar plot of family tensions over an interracial couple.
- Dierich Baker made his guest appearance in this episode, then he recently played as Oswald Lee Harvey in ABC sitcom The Drew Carey Show.
- Vivian: Here we are, the Smith sisters, loud live and in color.
- Helen: More like quiet, evil and colored.
- Vivian: Janice, why didn't you tell anyone about Frank?
- Janice: I guess I was hoping no one would notice?
- Helen: Girl, who did you think you were bringing him home to, Stevie Wonder?
- Vivian (after seeing Janice's fiance for the first time): You know, when Janice described him, she didn't mention that he was...tall. Not that I have any problems with people who are...tall.
- Lester: My cousin used to date a girl who was...tall.
- Phil: Heck, the boys go to a predominantly...tall school.
- Will: Am I alone in this or did no one notice he was white?
- Vy: What the hell is wrong with Janice?
- Will: Oh, I'm sorry. Did I say white? I meant tall.
- Hilary: He didn't seem that tall to me.
- Hilary: Do I have to do everything myself?
- Geoffrey: Miss Hilary, the day you do everything yourself will be the day I square-dance naked on the White House front lawn.