Here's your dose of casting updates for June 4, 2009:

• Lisa Kudrow, Alyson Machalka, Thomas Haden Church, Patricia Clarkson, Stanley Tucci, Penn Badgley, Cam Gigandet, Malcolm McDowell and Daniel Byrd will join Emma Stone and Amanda Bynes in Will Gluck's comedy "Easy A," a modern reimagining of "The Scarlet Letter." Written by playwright Bert V. Royal, the film centers on a high school student who seeks financial and personal gain by pretending to be the school slut. (Variety)

• Chris Pine, who's currently onscreen in "Star Trek," is in talks to join Denzel Washington in Tony Scott for Fox's upcoming thriller "Unstoppable." The plot follows an engineer who boards a locomotive with a young conductor (Pine) and attempts to chase a runaway train loaded with a bunch of toxic chemicals. (The Hollywood Reporter)

Orlando Bloom is in talks to join Andrew McCarthy, Ellen Burstyn, Patricia Clarkson and Colin Firth in John Doyle's upcoming drama "Main Street."

According to the Hollywood Reporter, the film follows a group of a small North Carolina town residents whose lives are turned upside down with the arrival of a stranger. Bloom is set to play a police officer.

Doyle is directing a script by the late Horton Foote, whose credits also include "To Kill a Mockingbird" and "Of Mice and Men."

Bloom, who last starred in "Pirates of the Caribbean: At World's End," will soon be seen in "New York, I Love You" and "Sympathy for Delicious."

McCarthy recently appeared on "Lipstick Jungle," while Burstyn last starred in "W." Clarkson's recent credits include "Vicky Cristina Barcelona" and "Elegy." As for Firth, was was recently seen in "Mamma Mia!"