They're two celebrities—Baldwin basically playing his 30 Rock character Jack Donaghy and Krasinski his Jim Halpert from The Office—acting out the Yankees-Red Sox rivalry as a real-life competition between friends. Er, friends who are enemies when it comes to baseball.
Whatever you call them, the ads are wonderfully written and beautifully shot in black and white and they're actually done to promote New Era's officially licensed Major League caps and gear.
But the sales pitch plays most of all on the trash-talking between these two frenemies and the rivalry between their teams on the field.
Take a look at all five of the ads that have been released so far, including the hilarious new spot, titled "912."
The trash talking tips off with Krasinski giving Baldwin the business because the mighty Bronx Bombers weren't able to land then-free agent Cliff Lee.
"It's going to be the worst misery you've ever experienced in the history of this rivalry."
But Baldwin—and, presumably, his Yankees—don't consider it a rivalry at all:
"Just like fire doesn't have a rivalry with kindling. Lawnmowers don't have a rivalry with grass. America doesn't have a rivalry with Costa Rica."
But how can Baldwin be a fan of the Yankees, asks the Sox supporter. "It's like being a huge fan of facism."
"No," replies the smug Yankees fan, "it's like being a huge fan of winning. Which we do...relentlessly."
The stage is set. Don't you want to hear and see more of this ruthless rivalry? Keep watching.
In this second spot, titled "One Hitter," Baldwin takes the rivalry to a physical level, racing all the way to Krasinski's apartment to punch him in the face for the Red Sox beating the Yankees that night.
One problem: the Yankees actually won. Baldwin had left in the sixth inning.
So he apologetically leaves the Office star some cash to "get [his] face fixed."
"It's OK, I don't think it's broken," replies the Boston fanatic.
"I know," says Baldwin, motioning intently at Krasinski's face. "Get it fixed."
In their third New Era spot, Krasinski takes the rivalry to yet another level, spray painting Baldwin's dog with Red Sox logos and attaching a mini-Sox cap to the pup's head.
"Yes!" screams Krasinski in victory.
"I don't have a dog," deadpans Baldwin. "My neighbor does."
Baldwin, of course, fights back in the next ad, "JumboTron John," in which he sends in a doctored photo of Krasinski in a Yankees bikini to display on the center field scoreboard at Yankee Stadium.
Not sure which John is angrier about: the bikini shot or being called "that actor, John Krapalewski" by the fake Yankees broadcaster.
Krasinski: "For someone who just watched their team get totally annihilated, you seem pretty calm."
Baldwin: "It's not whether you get knocked down, John, it's whether you get back up again."
And Baldwin gets back up again quickly in this latest ad, "912," deciding to burn a handful of Red Sox tickets to "make everybody in Fenway cry."
Of course, Baldwin ends up burning down his entire apartment building, going on the lam and coming to John for help...and a place to stay.
Which ad is your favorite? And what should Baldwin and Krapalewski do for their next spot?