Movie Title Game: Before & After

This one's a triple:

Jealous piano teacher Orville Spooner sends his beautiful wife, Zelda, away for the night while he tries to sell a song to famous nightclub singer Dino, who is stranded in town among a group of teenagers telling seven stories interwoven to create a relatable tale of the gap between teenagers and the older generation. One of them, a teen from Oregon, tells that when he brought a wife back to his farm, his six brothers decided they wanted to get married too. Cameo by Surjit Singh as "Some Guy With Only One Credit On His IMDB Resume."

During the Napoleonic Wars, a brash British captain pushes his ship and crew to their limits in pursuit of a formidable French war vessel around South America. His first mate is a mischievous, yet righteous young man, but after a series of incidents, the frustrated captain has him disciplined by Beggar So, a master of highly unconventional martial arts.

Secure within a desolate home as an unnatural threat terrorizes the world, a man has established a tenuous domestic order with his wife and son, while a morgue attendant is talked into running a brothel.

An orphaned brontosaurus teams up with other young dinosaurs, while a man's vision for a utopian society is disillusioned travelling forward into time.

Mike Brady has left his family, moved to Canada, and joined the air force. He has risen to the rank of colonel and commands Canada's largest air base. But he secretly leads a life of perversion. His crimes begin with merely breaking into women's homes and stealing their panties, but they escalate to assault, rape, and finally murder. He is caught but escapes and flees back to the United States, where he becomes a secret agent. Strangely, just after doing so, he sings "Everybody Loves Somebody" in a scene which has nothing to do with the rest of this movie. Then he embarks on a quest to save Washington, DC, when a criminal mastermind kidnaps the scientist Norman Solaris to use his laser technology to destroy the city.

EDIT: It's been a full day with no response, so I'll put the answer here under a spoiler cover.

The first movie is An Officer And A Murderer (2012). It depicts the true story of Russell Williams, the commander of the Royal Canadian Air Force's Trenton base. Gary Cole, who played Mike Brady in the movies which parodied the Brady Bunch television series, played Williams in the movie.

(On a side note, if you're interested in true crime cases, this is a fascinating and unusual one. Most people who commit such acts as adults also did things in adolescence which indicated psychological disturbances; torturing small animals, et cetera. Williams later acknowledged that he had perverted impulses and desires for a very long time before he took any action. Yet by all indications he led a clean life and didn't perv out until he was past forty. Strange.)

The second movie is Murderer's Row (1966), one of the Matt Helm series of spy spoof movies which starred crooner and Rat Pack member Dean Martin, who had several signature songs including "Everybody Loves Somebody."

So ... An Officer And A Murderer's Row.

The last man alive on earth is mauled by a grizzly and has to travel alone through miles of forest.

The winner of the pentathlon and decathlon in the 1912 Olympics is later stripped of his medals when, as a maritime officer, he cowardly abandons his foundering ship without saving its passengers.

A Vietnam vet gets conned by a friend to help in a heroin deal that goes sour while 2 brothers reunite and try to get rich in Vegas.