Opening this weekend at a theatre near you, Robert Downey Jr. stars as Mr. Tony Stark in Iron Man 2; and in the documentary Babies, a filmmaker follows the lives of four newborns in four very different countries.

On May 7, Paramount Pictures debuts director Jon Favreau‘s hotly anticipated sequel, Iron Man 2, which once again stars Robert Downey Jr. as the iconic Tony Stark.

This week in DVD Tuesday I take a look at the latest new arrivals: Sherlock Holmes returns to the screen in Guy Ritchie‘s action-packed adaptation starring Robert Downey Jr.; plus a look at the drama An Education, starring Carey Mulligan and Peter Sarsgaard, and the children’s comedy, Alvin and the Chipmunks: The Squeakquel.

Hollywood welcomed some of its favorite A-listers, directors, producers, and assorted filmmakers for the 82nd Academy Awards on Sunday, March 7.

Opening this week just in time for Christmas holidays, Robert Downey Jr. stars as tough but wise Sherlock Holmes; Daniel Day-Lewis stars in Rob Marshall‘s musical, Nine; plus a look at Alvin and the Chipmunks: The Squeakquel, It’s Complicated, Imaginarium of Doctor Parnassus, and Up In The Air.

The folks over at Yahoo! Movies have revealed the first official poster for Iron Man 2, in addition to nine photos from the upcoming 2010 film.

A weekly round-up of news stories on the comings and goings of the entertainment world. This week: Robert Downey Jr. may be cast as the vampire Lestat, Superman is being chopped up in the courts, St. Elmo’s Fire is coming to television, and Bryan Singer moves closer to rebooting Battlestar Galactica.

New on DVD this week, Robert Downey Jr. stars alongside Jamie Foxx in the obvious, heart-tugging drama, The Soloist. Also available, Disney revisits the family franchise from yesteryear with Race to Witch Mountain, and Idris Elba stars with Beyoncé in the thriller Obsessed.

New releases coming to theatres this weekend include Disneynature’s stunning documentary, Earth; The Soloist with Robert Downey Jr. and Jamie Foxx; the thriller Obsessed, starring Beyoncé, Idris Elba, and Ali Larter; and the action-drama, Fighting.

Follow the fun-loving Wall•E on a trip through space as he follows his hearts desire, meets up with humanity, and tries to bring them back home. Also out this week, Ben Stiller directs and stars in the war drama spoof, Tropic Thunder, about a group of super stars lost in the jungle during the filming of… an epic war drama.