A half-dozen world preems have been added to the Tribeca Film Festival’s 2012 slate, along with the Tribeca Talks lineup of conversations and events that this year include a panel with Robert De Niro, Meryl Streep and Judd Apatow in conversation about the 100th anniversary of Universal Pictures.

Four of the fest’s newly added world preems will screen as part of the “After the Movie” subsection of Tribeca Talks, including “Freaky Deaky,” Charles Matthau’s adaptation of Elmore Leonard’s 1970s L.A. tale, with stars Christian Slater, Crispin Glover, Michael Jai White and Andy Dick joining the scribe and the filmmaker for the panel. The bow of Jenny Deller’s “Future Weather,” about a teenager obsessed with global warming, will be followed by a talk with the filmmakers and star Lili Taylor.

Two documentaries — Jonathan Kalafer’s “Once in a Lullaby: The PS22 Chorus Story” and Andrew Shea’s “Portrait of Wally,” about an attempt to retrieve a painting stolen by the Nazis — also will receive world preems as part of the series, alongside screenings of “WarGames,” docu “The Virgin, the Copts and Me” and an avant-garde anthology.

“Wagner’s Dream,” which chronicles the mounting of the Metropolitan Opera’s new production of “The Ring Cycle,” debuts in the “Beyond the Screens: Globalize Your Thinking” series, while the “Industry” lineup of discussions will bring in participants including Brett Ratner and Morgan Spurlock.

The panel tribute to Universal’s century joins a lineup of special events that also includes the world preem of Bill Guttentag’s political satire “Knife Fight.” Other sections of the Tribeca Talks program include the writing-centric “Pen to Paper” and a sports-themed panel as part of the Tribeca/ESPN Sports Film Festival.

The 2012 Tribeca Film Festival runs April 18-29.