Guest star Chris Diamantopoulos recalls a memorable moment with Gandolfini during the HBO series' final season ...

Character actor Chris Diamantopoulos remembers "a rite of passage" accident on set with late actor Tony Sirico.

Diamantopoulos played Jason Barone, the son of an old family friend of Tony Soprano (James Gandolfini), as he goes against ...

Diamantopoulos, 49, appeared in the hit HBO series' final season's fourth episode, "The Fleshy Part of the Thigh,” as Jason Barone, a son in mourning for a father who was secretly working with Tony ...

Diamantopoulos, 49, appeared in the hit HBO series' final season's fourth episode, "The Fleshy Part of the Thigh,” as Jason Barone, a son in mourning for a father who was secretly working with T ...

Diamantopoulos played Jason Barone, the son of an old family friend of Tony Soprano (James Gandolfini), as he goes against the mobster’s wishes, unaware of his late dad’s ties to the Mafia.

He portrayed Jason Barone, an New Jersey native mourning the loss of his father, who was secretly working with Tony Soprano (James Gandolfini) and Paulie "Walnuts" Gualtieri (Tony Sirico).