Pomp, patriotism and fireworks are on display today all over the country and all over the dial. Barry Bostwick returns as host of “A Capitol Fourth” (7 p.m., PBS) live from the west lawn of the U.S. Capitol. Scheduled artists include Dolly Parton, The Chieftains, John Williams, Kristin Chenoweth, Craig Bierko, Earl Scruggs and Jerry Douglas, as well as Erich Kunzel and the National Symphony Orchestra.

“A Capitol Fourth” offers a special tribute to the prolific John Williams, composer of popular musical scores for movies including “Star Wars,” “Jaws,” “Schindler’s List,” “E.T. the Extra-Terrestrial” and the “Indiana Jones” trilogy. “A Capitol Fourth” can also be heard live over many National Public Radio stations.

• More than half a million viewers are expected to be on hand to watch Keith Lockhart conduct the “Boston Pops Fireworks Spectacular” (9 p.m., CBS) on Boston’s Charles River Esplanade. Musical guests include LeAnn Rimes and the Mormon Tabernacle Choir. The Pops will conclude with “1812 Overture.”
• Not to be left out, New York celebrates Independence Day with the celebrity-studded “Macy’s 4th of July Fireworks Spectacular” (8 p.m., NBC), hosted by Carson Daly and Molly Sims. Performers and guests include Sarah Jessica Parker, Kelly Clarkson, Sheryl Crow, Beyonce, John Mellencamp, Kenny Chesney, Reese Witherspoon, Harrison Ford and Arnold Schwarzenegger. President George W. Bush will address the nation during the telecast.
• For those who prefer the black-and-white to the red, white and blue, there’s always “The Twilight Zone” marathon on the Sci-Fi Channel. Viewers can catch classic episodes of the anthology series through 5 a.m. Saturday.

Tonight’s other highlights

• Scheduled on “Dateline” (7 p.m., NBC): A new class of homeless people who once held jobs with good wages and benefits.
• A Yank (Tom Everett Scott) befriends a moody Parisian (Julie Delpy) with a hairy disposition in the 1997 horror film “An American Werewolf in Paris” (7 p.m., Fox).
• Miguel Ferrer stars in the cop drama “L.A. County 187” (7 p.m., UPN).
• Scheduled on a repeat “48 Hours Investigates” (8 p.m., CBS): Greed leads a group of college boys to drugs and the murder of a secret service agent’s son.
• Repeat reports are scheduled on “20/20” (9 p.m., ABC): Interviews with Christina Aguilera and Justin Timberlake; picky pop stars; very, very planned communities.
• Monk flies coach, fitfully, to track down two airborne killers on a repeat “Monk” (9 p.m., USA).

Cult choice

James Cagney won an Oscar for his portrayal of music-hall singer and hoofer George M. Cohan in the 1942 musical “Yankee Doodle Dandy” (7 p.m., Turner Classic Movies).

Late night

Mark Wahlberg, Jesse James and The Sounds appear on a repeat “Late Show with David Letterman” (10:35 p.m., CBS) … Jay Leno welcomes Sandra Bullock, David Russ and Fleetwood Mac on “The Tonight Show” (10:50 p.m., NBC).