Bolt (movie): A+. A perfect feel-good flick. Highly recommended.
Mamma Mia (movie): A musical created by stringing a plot together from Abba songs. A- or C, depending on how you feel about Abba. This is one of very few musicals where a spontaneous musical dance number seemed plausible (because, let's face it, the dance floor is never empty when Dancing Queen comes on).
Across the Universe (movie): B. A musical created by stringing a plot together from Beatles songs. Unlike Mamma Mia, the music is entirely rearranged and reinterpreted.
Across the Universe (soundtrack): A+. Covering and reinterpreting Beatles tunes is ambitious undertaking and they pull it off, breathing fresh air and life into familiar material. Carpio's crooning "I Want To Hold Your Hand" is powerfully sensual, while Jim Sturgess's "I've Just Seen a Face" grabs you by the happy in the first 3 seconds and doesn't let go. (<--- links auto play the songs)