Like when one of the characters claims that Warren Beatty had "Heaven Can Wait" posters recalled because the artwork made him look anatomically smaller than he liked. Or the mention of a certain cast member of "Ocean's Eleven" personally buying up $3 million in tickets on the film's first night to ensure it opened at No. 1.

It's enough to make real-life celebrities sweat every time a half-hour episode of "Entourage" hits the airwaves. Sometimes, they do.

Co-star Kevin Dillon, who plays Drama, the vain, dim-witted half-brother of the hot shot movie star at the center of the show, said this season has his character contemplating calf implants.

"We had the L.A. premiere [of the second season], and afterwards I had someone come to me and say, 'I think that was about me,' " Dillon said in an interview from his Los Angeles home.

"There's plenty of people like that," said series creator Doug Ellin about paranoid industry types who come to him worried they will be skewered in the show. But, "There are people who also say, 'Why don't you make a character out of me?' "

The half-hour comedy series enters its second season Sunday with more Hollywood insider stories about the skyrocketing stardom of young movie star Vincent Chase (Adrien Grenier) and his friends from Queens who are part of his entourage.

There's Drama, who uses his brother's stardom to help promote his career; Turtle (Jerry Ferrara), the friend who uses the fame only for women and parties; and Vince's best friend Eric (Kevin Connolly), the pragmatic one who becomes Vince's personal manager.

Then there is Vince's egomaniacal agent, Ari (Jeremy Piven), an exaggerated version of real-life entertainment agent Ari Emanuel and the embodiment of an overdriven, over-the-top mover and shaker who spits out Hollywood-ese like a machinegun. (In one episode, he makes up with Eric by asking, "Let's hug it out, b***h.")

The show is loosely based on executive producer Mark Wahlberg ("Boogie Nights," "Planet of the Apes") and his rise as a celebrity in Hollywood, though Ellin said it also includes elements of his own life.

"The idea came out of Mark and his manager, Stephen Levinson. They wanted to do a show about Mark and his voice. I came in and kind of found my way into it, making it about people I know," Ellin said. "I come from the East Coast, and these guys [the characters in the series] are much closer to my friends than Mark's. His friends are a little bit tougher."

The second season will include an episode shot in Park City when January's Sundance Film Festival was in full swing. The story arc follows Vince and his entourage as he finishes making an independent movie that ends up at the prestigious festival.

In January, the cast and crew shot scenes in front of the Egyptian Theater on Main Street for an episode in which they try to woo blockbuster filmmaker James Cameron ("Titanic") to the festival to see Vince's film.

"It was really one of the best four days of my life," Ellin remembered. "It was so much fun. It was just great getting these guys out of L.A. and into the snow, it was fantastic. Shooting at Sundance gave us such a big sense of authenticity."

Despite all the winks about Hollywood insiders and pokes at the nature of celebrity, Dillon says "Entourage" ultimately is about friendship.

"You have four guys who are really tight," he said. "They really care about each other. And if you don't care about the characters, you won't care about the show."

Creator Ellin agrees that no matter which celebrity gets jabbed or satirized in next week's episode, he wants the attention on movie star Vince and his three friends living it up in the Hollywood Hills.

"It's about four guys. And it always was, from the day of creation, going to be closer to 'Diner' than 'The Player,' " he said. "It could very well be about bankers or firemen."

4 FRIENDS + FAME =

The second season of 'Entourage' sends the foursome to Sundance in search of authenticity Who's who on HBO's 'Entourage'

The second season of "Entourage," about the adventures of a young Hollywood celeb and the hometown buddies in his posse, begins Sunday at 10 p.m. on HBO. This season includes an episode filmed in Park City during the Sundance Film Festival in January.

Who's who on the show:

* Adrien Grenier is Vince, the sexy young movie star.

* Kevin Dillon plays Drama, Vince's dense brother.

* Jerry Ferrara is Turtle, who uses Vince's fame to woo women.

* Kevin Connolly plays Eric, Vince's personal manager.

* Jeremy Piven is Ari, the Hollywood agent.