According to ITV, Mamma Mia! has been named best musical with leading lady Meryl Streep winning best actress at the second National Movie Awards in London. Accepting her award for her role in Abba-centric film, Streep told the Royal Festival Hall audience: “I loved the movie, I’m so glad you did.” Mamma Mia! beat competition from fellow nominees Enchanted and Sweeney Todd: The Demon Barber of Fleet Street. Streep triumphed over Amy Adams for Enchanted, Helena Bonham-Carter for Sweeney Todd and Ellen Page for US comedy Juno.

Meryl Streep and Antonio Banderas will receive Donostia lifetime achievement awards at the 56th San Sebastian International Film Festival, organizers announced Friday as they revealed the remaining details of this year’s event. Spanish homeboy Banderas will pick up his award on Sept. 19, one night after presenting the European premiere of Richard Eyre’s “The Other Man” at the opening night ceremony. The festival will honor Streep Sept. 26. for her prolific and talented career as “the best modern actress,” saying “it is almost impossible to speak of her without resorting to superlatives.” San Sebastian runs Sept. 18-27 in Spain’s northern Basque region.

“A Celebration of Maurice Sendak” will be presented Sept. 15 at the 92nd Street Y as part of the East Side venue’s Reading Series. Among those scheduled to be part of Sendak’s 80th birthday celebration are Tony Kushner, Meryl Streep, James Gandolfini, Dave Eggers, Spike Jonze, Linda Emond, Catherine Keener, Anika Noni Rose and Stephen Greenblatt. Show time is 8 PM. Maurice Sendak is the author and/or illustrator of more than 90 books, including “Where the Wild Things Are,” “Higglety Pigglety Pop!” and “In the Night Kitchen.” He has also collaborated on several operas and ballets; in fact, he and Tony winner Kushner joined forces in 2006 for a one-act operatic adaptation of Sendak’s “Brundibar.”

While there’s still no official word on wheter Meryl will star in Nancy Meyer’s upcoming untitled comedy or not, another cast member has been added to the project. Alec Baldwin is in talks to join Meryl Streep in Nancy Meyers’s romantic comedy. Baldwin will play one of two men vying for the affections of Streep’s character. The Universal movie, which Meyers has written and will direct, is to begin production next February.

According to Variety, Meryl Streep is in advanced negotiations to play the female lead in the untitled romantic comedy that Nancy Meyers will direct for Universal. Meyers is producing with Scott Rudin. Production begins in February. Streep will play the female in a romantic triangle with two men. The director, who made “Something’s Gotta Give” and “The Holiday” for Columbia Pictures, made the deal to bring her next picture to Universal earlier this year. Streep is currently voicing a lead role in “The Fantastic Mr. Fox,” the stop-motion animation adaptation of the Roald Dahl novel at 20th Century Fox.

Mamma Mia!, The Golden Compass and St Trinian’s lead the field for the National Movie Awards, picking up four nominations each. Mamma Mia! cohorts Pierce Brosnan and Colin Firth are up for Best Male for their roles in the Abba musical film. Meryl Streep, Angelina Jolie and Sarah Jessica Parker are also in the running for the award. The winners, voted for by the public, will be unveiled in London on September 08 at London’s Royal Festival Hall and in a live ceremony screened on ITV1. You can vote for Meryl by submitting your vote here.

Jennifer Aniston, Scarlett Johansson and Charlize Theron are among the A-listers who signed on for the Stand Up To Cancer telethon in September. American Idol David Cook, Christina Applegate, Meryl Streep and Sally Field also will appear on the Sept. 5 broadcast, which will be simultaneously aired on ABC, CBS and NBC to raise money for cancer research and treatment. Dozens of other celebrities and sports figures will also be appearing on the program, according to Stand Up To Cancer.

In spite of stiff competition from the newest Batman film, the film version of Mamma Mia! enjoyed a strong opening weekend at the box office, taking in a solid $27.6 million. Although that total didn’t approach The Dark Knight’s record-breaking $155.4 million, it narrowly beat the opening total of last year’s feature film transfer of Hairspray. Universal Studios’ decision to release Mamma Mia! as a counter-programming move to the dark sequel to Batman Begins paid off. Together, the two films created the biggest opening weekend ever in terms of total grosses, according to Variety. Overseas, where Mamma Mia! opened a week ahead of its U.S. premiere, the movie grossed $26.8 million in its second week for an impressive total of $72.6 million.