Chris Buck and Jennifer Lee’s animated Disney movie Frozen (B+) mixes up the princess formula with some unexpected twists and largely enchanting results. This Scandanavian storybook adventure is filled with fresh ice effects, compelling heroines, charming sidekicks and winning songs by Kristen and Bobby Lopez. Kristen Bell and Idina Menzel’s power ballads and a snowman’s serenade to sunny climates – by Book of Mormon‘s Josh Gad – are among the highlights.