Middle age has done little to dim the energy of John Leguizamo, who begins his latest solo show Ghetto Klown by frenziedly dancing to James Brown’s “Sex Machine.” This entertaining autobiographical piece by the actor/writer--following in the heels of such acclaimed works as Mambo Mouth, Spic-O-Rama, Freak and Sexaholix…a Love Story—is bound to appeal to his fans, even if its slight content reveals that he’s mined his life story perhaps once too often.

Unlike the familial and social themes explored in his previous pieces, this effort concentrates on the details of Leguizamo’s show business career. It resembles a live version of the sort of freewheeling, dishy autobiographies that movie stars inevitably produce at one point.

While the star claims it to be both a “cautionary tale” and an exercise in “free therapy,” the evening hardly proves revelatory, unless you count descriptions of being manhandled by Steven Seagal or getting stoned with Kurt Russell as being particularly scandalous.

Performing on a tenement-styled set complete with fire escape that could serve for a scaled-down revival of West Side Story, the performer begins his tale with a recounting of his family’s immigrating from Columbia and his subsequent upbringing in Queens, NYC. He even accompanies his description of his teen years with projections of embarrassing photos from his high school yearbook.

But he mainly talks about his acting career, from his early days performing at such Off-Off Broadway venues as P.S. 122 to his acclaimed solo shows on Broadway to his roles in such films as Carlito’s Way, William Shakespeare’s Romeo + Juliet and To Wong Foo, Thanks for Everything, Julie Newmar.

Both freely self-reflective and self-effacing, he describes such less felicitous episodes such as his father’s displeasure in the way in which he is depicted by his son on stage and subsequent threats of legal action; his early typecasting as criminals and drug dealers in such television shows as Miami Vice; and his ill-fated foray into variety television with the short-lived House of Buggin’.

 Leguizamo brings much energy to the proceedings, which is filled with funny one-liners and hilarious impressions of such co-stars as Al Pacino. But the overlong evening begins to wear thin over the course of its two-and-a-half hours. When he goes on at length about his arduous pursuit of the woman he would later marry and then proudly displays pictures of their adorable babies, it’s like running into an old classmate at a high school reunion from whom you can’t wait to tear yourself away.

Lyceum Theatre, 149 W. 45th St. 212-239-6200. www.telecharge.com.