One wouldn't necessarily think of Hugh Jackman, muscle man of Broadway and the X-Men universe, to introduce a special acoustic performance by members of pop-punk band the Yeah Yeah Yeahs. But however incongruous, they came together for modern art last night at the after party for the Museum of Modern Art's annual Party in the Garden. Jackman jumped on the stage set up in the museum's sculpture garden to introduce Karen O and Nick Zinner.—KIMBERLY CHOU