Forty Second Street: A big-time director hires a random groupie in desperation. Luckily, said groupie just happens to have enough raw talent to make any Mary Sue jealous.
1776: An obnoxious lawyer, an emo farmer, a horny doctor and a bunch of middle-aged white men bitch about the heat and call each other names while trying to start a revolution. There are more sex jokes than you might expect. A lot more.
Ajax: A guy goes nuts when a fallen hero's armor is given to someone else. Written by a pedophile.
A Little Night Music: Rich Swedish people who are unhappy with their relationships end up in better relationships.
A Night In The Old Marketplace: With the help of a statue and a drunk, a guilt-ridden Jewish comedian tries to resurrect a woman who committed suicide the day her parents forced her to marry a rich guy. The rich guy in the hero. Everyone sings lots of klezmer, and They Might Be Giants show up for the finale to sing about dead people getting drunk.
Alice: Schoolteacher uses alias to attempt to seduce his student. When that fails, he turns into a rabbit. That, too, fails, because she is more interested in discussing the life of Johnny Eck with a drug-addicted larva and becoming royalty. Music by Tom Waits.
Alls Well That Ends Well: To avoid bedding his wife, a Jerk Ass goes off to war alongside a Dirty Coward. His bride is determined to get pregnant by him, and sabotages a Florentine widow's reputation to attain this goal.
Amadeus: An old man is still obsessed with his rival, decades after killing him.
Androcles and the Lion: Married man's affair with Pantomime Animal makes emperor get religion.
Angels In America: God hires Roy Cohn to represent him in a parental abandonment suit.
The Comedy of Errors: A tourist in a foreign city tries to pick up a hooker and gets bitch-slapped by the wife of his long-lost twin brother; he then falls in love with a woman who thinks she's his sister-in-law... in the end, the brothers learn that their mom is a nun and their dad is on death row, and everyone lives happily ever after.
Company: A single guy hangs out with his married friends.
Cyrano de Bergerac: An ugly man kills people and lusts after his cousin. Oh, and he writes a lot of poetry.
Dancing At Lughnasa: Five poor sisters dance a lot, the youngest sister's son is snarky, the older brother murders a rooster and the son's estranged father tears the family apart.
Dearly Departed: A dysfunctional Southern family brings their neuroses to the surface after the death of the family patriarch. This is all played for laughs.
Drood: A whiny writer dies midway through his final murder mystery. The guy who wrote "The Pina Colada Song" gets ahold of the story and turns it into a Broadway musical, forcing the audience to pick the ending.
The Drowsy Chaperone: A man sits in his apartment listening to a record of his favorite musical and complains about stuff.
Or, a wedding falls apart and comes back together for no good reason, and then they all go to Rio.
The Dybbuk: Romeo and Juliet meets The Exorcist. Alternatively: a young divinity student studies the wrong Jewish religious text. Tragedy ensues. (Was made into a classic Yiddish movie.)
Einstein On The Beach: People sing scales, numbers, and nonsense poetry (some of it written by an autistic teenager) while a man (or sometimes woman) dressed as Albert Einstein plays the violin. For 4 1/2 hours with no intermission.
Equivocation:The bad guy wins, but Shakespeare makes fun of him.
Equus: A sexually repressed teen murders horses, then a therapist reconsiders his job.
The Father: Old army scientist argues with his wife about their daughter.
The Flying Dutchman: A young girl really likes this moody Byronic hero she read about. When he suddenly appears, her father who, like, Oh my god, doesn't undersand her, turns out to be OMG evil, selling her to him! Then he finds out who he is, and tries to back out! Her boyfriend begs her to come back, but she throws herself off a cliff rather than being one of the mundanes. As an opera.
Frank's Wild Years: Man returns to hometown, tries to convince everyone that he's famous.
Thespis: The Greek gods go to Earth to drum up worshippers. The theatrical team that takes their place proves most incompetent. Hilarity Ensues. This play is now lost forever, but that's all right because new music has been written for it.
Trial By Jury: A biased judge arbitrates a breach of promise case.
The Gondoliers: Two naive idealists share the crown until the rightful heir is determined.
Utopia, Limited: An impressionable culture becomes a caricature of Victorian England. Two power-hungry apparatchiks and a man obsessed with making things go boom protest. Characters from other operas get cameos.
Happy Days: A woman is buried up to her waist in sand. By Act Two, she's buried up to her neck.
The Haunted Manor: Two Polish soldiers who vowed never to have sex hope to get married to two sisters but not until their aunt tells them a made-up story of hers. The title doesn't really prove it, but it's a comedy.
Henry V: A king uses rhetoric to convince his army that dying in the muck is the best fate they could possibly hope for.
Or: An English king punishes France for a poorly timed ball joke by conquering their country, marrying their princess, and talking a lot. Then he dies.
The Heracleidae: One king threatens another with war if the other does not deliver up some orphaned children and their guardian to be killed.
Hippolytus: The queen desires her misogynistic stepson, who spurns her. The King misunderstands her suicide note and things go downhill from there.
Phaedra: The same as above, except that the queen lodges a false accusation against her stepson while still alive.
The House of Bernarda Alba: Widow has the great idea of locking up her daughters for eight years. One of them has sex with her boyfriend through a window. And then she dies.
Long Day's Journey into Night: Dysfunctional family stew over their resentments. A dead baby is given the author's name.
Lohengrin: A knight of the Holy Grail marries a woman who gave him Love at First Sight but must flee when she asks his name.
Lucia Di Lammermoor: A girl is made to pretend to jilt her lover and marry a man she dislikes. Insanity Ensues.
Macbeth: War hero finally finishes his "honey do" list, which involves a lot of politically-motivated murder, only to see his wife retreat into obsessive-compulsive hand-washing. Then a guy who was born by Cesarean section cuts his head off.
Or: Witches stir a cauldron. This is the most memorable part of the play. If you trick an actor into saying the name of this play while in a theatre you win a prize.
Mamma Mia!: A woman on a Greek island doesn't know who the father of her daughter is. Blamed for popularizing the Jukebox Musical.
Me and My Dick: A musical about a young boy struggling to loose his virginity, and his best friend is his dick.
The Merry Wives of Windsor: A fat man flirts with two married women in order to get at their money. His final attempt involves antlers.
The Merchant of Venice: Nobody seems to know, just that it's racist now. Actually, it's about a guy who agrees to get maimed so his freeloading best friend (and, as it turns out, his freeloading friend) can go skirt-chasing. It's considered a comedy.
A Midsummer Night's Dream: A king has trouble with his marriage, so he uses a magic flower and a trickster to get back good with his wife. A teenage love story and a stage play complicates matters. The phrase "Make an ass out of yourself" gets used far more literally than we're used too.
Les Misérables Police officer won't stop chasing baked-goods-thief with a penchant for adopting prostitute's daughters.
Miss Julie: Servant convinces title character that suicide is the only way to go.
Tanz Der Vampire: The lives of a mousy young guy, a cranky old man, a girl with a thing for sponges, an innkeeper and a busty scullery wench take an interesting turn when the local aristocracy has a little get-together.
Three Sisters: A family plan to move house, but never get around to doing it. One guy has a brief soliloquy about human nature, but gets interrupted by another guy's search for chocolate.
Titus Andronicus: A man slowly goes mad, several people end up dead in the woods, and a queen learns to regret accepting dinner invitations.
Wicked: Passionate animal rights activist with a weird skin condition learns magic, befriends the Alpha Bitch, steals her boyfriend, and sets up the Alpha Bitch as a benevolent dictator by faking her own death. Her sister also becomes dictator of an agricultural Ruritania and then dies violently (though she might have survived after all).
Alternately: Published Fan Fiction of L. Frank Baum's work made into a musical.
Alternatively, a professor finds an ideal candidate for his research, neglects to tell her that she's going to die and then leaves his intern to deal with it. Said intern goes on to desecrate the subject's corpse.
The Witches of Eastwick: Three women having affairs conjure up the devil. They all sleep with him.
World of Color: One of the least-loved Disney Theme Parks presents a half hour of clips and fountains arranged in a manner that doesn't really follow a plot. Each performance, only 4000 people can see the projections; everyone else who wants to watch has to settle for the backside of water.
Woyzeck: Play, rewritten as an opera, and then again as a rock opera, about a soldier who eats nothing but peas and then goes crazy, murders his girlfriend and maybe accidentally drowns himself.