According to IMDB, a lot of minor roles in The Dark Knight Rises have been cast.
Most notable is Miranda Nolan, cousin of Christopher and Jonathan Nolan, who previously played a flight attendant in Inception. She will play a maid.
Julie Mun, who previously appeared in the TV series Rescue Me will play a reporter in the stadium scene shot at Heinz Field where Bane (Tom Hardy) threatens Gotham.
Uri Gavriel, who appeared in The Kingdom with Jamie Foxx and Jennifer Garner, will play a blind prisoner.
Shaun O'Donnell from Russell Crowe's film The Korean will play a Gothamite
Emily Schooley from the TV series The Park Enforcer will play a hot football fan. As you can see, they're real.
Joshua Elijah Reese, who starred alongside Denzel Washington in Unstoppable, will play one of Bane's mercenaries at City Hall.
Sean P. McCarthy, who will also appear in The Avengers, will play a football fan.
Jorge Mandel for the short Man is a Bridge will be a background extra.
Slivia Lombardo, who was in Miss Pettigrew Lives For a Day with Amy Adams and Ciarán Hinds, will play a tourist.
Shannon Lanier and Matthew Gooley, both of whom appeared in Game Change, will play Gotham Rogues fans.
Duane Henry, who appeared in London Boulevard with Colin Farrell and Keira Knightley, will play a swat in a dive bar.
Finally, Star Bunner from Game Change will play a police officer.