Holmes will be in Park City, Utah, to promote two films: The Extra Man, with John C. Reilly and Kevin Kline, and The Romantics, with an all-star cast including Josh Duhamel, Anna Paquin and Elijah Wood among others.
On the hot list at the festival – is The Runaways, a biopic about Joan Jett's '70s band, starring Kristen Stewart and Dakota Fanning. On Saturday night, the real life rocker played a show, and invited Stewart and Fanning up onstage.
Affleck is in town for a short trip to promote his film, The Company Men, which costars Tommy Lee Jones and Kevin Costner.
Already earning approval from audiences is Adrian Grenier's Teenage Paparazzo, which documents the true story of a relationship between a 14-year-old paparazzo and the Entourage star. The film offers an intimate look at the paparazzi and how celebrity culture influences this particular teen and his family.
Other notable names expected at the snowy festival are: Michelle Williams for Blue Valentine, Naomi Watts for Mother and Child, Orlando Bloom for Sympathy for Delicious, American Ferrera for The Dry Land, Adrien Brody in for two films: Splice and High School.