Send in the Clowns.

In the movie bin, Jack Black and Kyle Gass venture to the crossroads in the new trailer for Tenacious D in The Pick of Destiny, while Sasha Baron Cohen is unleashed upon Red State America in this second look at Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan.

Ye men of blood.

Online of late is the new trailer for Martin Scorsese’s The Departed (a.k.a. the remake of Infernal Affairs, with Tony Leung and Andy Lau), starring Leonardo diCaprio, Matt Damon, Jack Nicholson, Mark Wahlberg, Martin Sheen, and Alec Baldwin. I liked the original quite a bit, but I get the sense from this preview that this version may be marred somewhat by the usual late-era Nicholson grandstanding.

Childhood’s End | Hard Shell.

No teens or mutant teens, take your pick: In the near future, Clive Owen, Julianne Moore, Michael Caine, and Chiwetel Ejiofor look to save the Earth’s last pre-born in the dystopic new trailer for Alfonso Cuaron’s Children of Men. (Between this and The Fountain, it may be a good fall for sci-fi.) And Michelangelo, Raphael, Donatello, and Leonardo (the turtles, not the artists) get the CGI treatment in the teaser for TMNT. (No Elias Koteas or Sam Rockwell this time around? Bleah.)

If I could sleep forever…

Gael Garcia Bernal spends both his waking and dreaming hours trying to court next-door neighbor Charlotte Gainsbourg in this spiffy trailer for The Science of Sleep, the new film from Michel Gondry, director of Eternal Sunshine of the Spotless Mind and Dave Chappelle’s Block Party.

Abracadabra.

“Every great magic trick consists of three acts. The first act is called ‘The Pledge’: The magician shows you something ordinary, but of course, it probably isn’t.” The full trailer for Christopher Nolan’s The Prestige (previewed the other day in ET-vision) is now online, and worth checking out.

Pugilists, Presidents, and Prestidigitators.

In the movie bin, Sly Stallone lets the XBox 360 go to his head in another look at Rocky Balboa, watchman Ben Stiller braves Ricky Gervais, Robin Williams-as-TR, and the increasingly overexposed Owen Wilson, among other things, in the Jumanji-esque new trailer for Night at the Museum, and YouTube and ET conjure up our first impressions of Christopher Nolan’s take on The Prestige, with Christian Bale, Hugh Jackman, Scarlett Johansson, Michael Caine, David Bowie, and Andy Serkis.

Renaissance Men (of Steel.)

In today’s trailer bin, Brazil alums Jonathan Pryce and Ian Holm reunite (as voice talent, with Daniel Craig and Catherine McCormack) in the Sin City-ish new trailer for Christian Volckman’s Renaissance, and Adrien Brody delves into the death of Superman (a.k.a. George Reeves a.k.a. Ben Affleck), with Diane Lane and Bob Hoskins on hand, in the new trailer for Allen Coulter’s Hollywoodland. Update: And one more: Edward Norton conjures up trouble for the powers-that-be (with Paul Giamatti, Jessica Biel, and Rufus Sewell) in the new trailer for The Illusionist (not to be confused with Christopher Nolan’s The Prestige, due out later in the year.)

Bots and Bugs.

Elsewhere, Michael Bay’s big-budget version of The Transformers gets a teaser (hopefully the robots work better than the website), and Spiderman 3 gets spoiled rotten over at Dark Horizons — Seriously, don’t go if you don’t want to know.