The series began Friday on PBS (locally, 9-11 p.m. on WFWA, Channel 39.1), which happens to be the home of the hit period soap opera, "Downton Abbey."
"Shakespeare Uncovered," along with PBS' planned fall airing of new films of four of Shakespeare's plays, "open up to this huge American audience this gold dust," Irons told reporters recently, and demonstrates that TV "doesn't end with 'Downton Abbey.'"
After then mischievously comparing Shakespeare to an Aston Martin and "Downton" to a Ford Fiesta, Irons admitted he hadn't seen the serial and was just having a bit of fun. But he's serious about the Bard of Avon.
"Watch these Shakespeare productions, and you'll see what real writing, what real stories, what real characters are about," he said.
The programs also present actor-writer-producer Shakespeare as a 16th-century impresario who knew how to please audiences and exploit his own work by bringing back popular characters and crafting "prequels."
"Shakespeare Uncovered" opens with Ethan Hawke's exploration of "Macbeth," including visits to the play's Scottish sites, a look at recent productions starring Patrick Stewart and Antony Sher, and an illumination of Shakespeare's grasp of the criminal mind.
It's paired with "Shakespeare Uncovered: The Comedies With Joely Richardson," about "Twelfth Night" and "As You Like It."
"Richard II" with Derek Jacobi and "Henry IV" and "Henry V" with Irons air on Feb. 1, with David Tennant's look at "Hamlet" and "The Tempest" with host Trevor Nunn concluding the series on Feb. 8.
There's travel as well as scholarship for the hosts. Irons visits the battlefield at Agincourt in northern France where, in productions of "Henry V," actors get to tear into the famed St. Crispin's Day speech ("We few, we happy few, we band of brothers").
Irons, who will star this fall in PBS' "Great Performances" adaptation of "Henry IV," said he was shooting the film when he was approached by "Shakespeare Uncovered" producer Richard Denton about taking part.
"Oh, that may be interesting if we can find the time. What do you want to do?" Irons recalled asking Denton. "And he said, 'Well, I want to put you in a boat. I want to put you on a horse. I want to take you to Agincourt.'"
"This sounds very interesting," the 64-year-old actor replied, which opened the door to an unexpected education — and more opportunity for Irons' colorful and unbridled wit.
"I learned, for instance, that the reason we won the Battle of Agincourt is because we had these amazing Welsh archers," while the French, in his words, "wore amazing stuff and great armor and (had) lovely horses, and they pranced around being gorgeous."
Irons' lively approach to the subject matter dovetails with the goal of "Shakespeare Uncovered" as described by producer Denton.
"The real drive (was) to make a series of films that would be entertaining, that would show Shakespeare with the kind of enthusiasm that Jeremy brings to it," Denton said, and would be accessible to those unschooled in the playwright's work.
To please Shakespeare buffs, the programs also include fresh insights into the connection between his life and his art, he said.
The bottom line on the Bard, according to Irons: Shakespeare endures as the greatest dramatist of all because he chronicled the eternal human condition in all its joys and sorrows.
"When we see those plays now, they still speak to us with a resonance that many hundreds of plays written between Shakespeare's time and today don't," he said.