At its best, stand-up comedy is a way of using laughs to relate uncomfortable truths. And “Gabriel Iglesias Presents Stand-Up Revolution” (9 p.m., Comedy Central) demonstrates how even a fairly bland and non-threatening act can bring the message home.

A veteran of the Nickelodeon sketch show “All That,” Iglesias is best known for dismissing his beefy figure with his signature line, “I’m not fat, I’m Fluffy.” Tonight’s show even features a music video for “Hey, It’s Fluffy,” by Ozomatli.

Despite his rather genial image, the show demonstrates how there are places in America where even somebody named Fluffy can seem dangerous.

Iglesias describes a highway stop between Arizona and California, where dozens of armed immigration agents lined him and his crew against the bus and searched then for legal papers, weapons and narcotics. Gifted at re-creating highway sounds, he paints the absurd picture of fans screaming out of their cars, “Hey, that’s Fluffy!” and “Hey, he’s American!” as they drove by. He also exults in the peculiarity of being stopped and frisked while forcibly pressed against the side of a tour bus bearing his name and likeness.

• Martin Scorsese’s two-part documentary “George Harrison: Living in the Material World” (8 p.m., HBO) concludes tonight. This is the far more interesting installment, covering Harrison’s public and private life from the time of the Beatles’ 1968 “White Album” to his death in 2001.

Using archival performance footage with original and vintage interviews, “Living” recalls how Harrison popularized Indian mysticism, all but invented the big rock charity concert, founded a film company, collaborated with Monty Python, and helped form a casual band with his friends called the Traveling Wilburys.

Harrison’s eclectic associates also included race car driver Jackie Stewart, who still seems visibly shaken by his loss. Blues/rock guitarist Eric Clapton describes his ongoing affection for Harrison, even after stealing Harrison’s wife, Pattie Boyd, the woman who inspired both the Beatles’ “Something” and Clapton’s “Layla,” which he performed with Derek and the Dominos.

The film recalls Harrison’s last days and ends with an anecdote from Ringo Starr that is at once deeply moving, remarkably funny and utterly in keeping with his public personality.

Tonight’s other highlights

• Boot camp continues on “The X Factor” (7 p.m., Fox).

• A Marine becomes a “Person of Interest” (8 p.m., CBS).

• The warehouse workers hit the jackpot on “The Office” (8 p.m., NBC).

• Things get ugly at a comics convention on “Grey’s Anatomy” (8 p.m., ABC).

• A former client returns on “The Mentalist” (9 p.m., CBS).

• Jane faces down a robber without her gun on “Prime Suspect” (9 p.m., NBC).

• The staff balks at Addison’s personnel decisions on “Private Practice” (9 p.m., ABC).

• The guys prepare for a new season as “The League” (9:30 p.m., FX) returns.