Elvy Yost has joined the cast of the Walden Media teen film "Will," directed by Todd Graff and starring Lisa Kudrow, Vanessa Hudgens, David Bowie, Scott Porter and Gaelan Connell. Yost plays a talented musician who is the butt of everyone's jokes until she is invited into the title character's band. Yost is repped by Schachter Entertainment and attorney Larry Kopeikin. … M.C. Gainey has joined the cast of Taylor Hackford's "Love Ranch." Based on Nevada's successful brothel industry, the film stars Helen Mirren and Joe Pesci. Gainey plays Warren Stamp, one of Charlie's (Pesci) right-hand men at the ranch. Gainey, whose feature credits include "Mr. Woodcock" and "Wild Hogs" as well as a recurring role on ABC's "Lost," is repped by Domain and Miriam Milgrom Management. … John Cabrera and Edoardo Ballerini have joined the cast of the indie crime drama "The Fifth Mafia," directed by Vito J. Giambalvo. The story centers on the son of a murdered Mafioso who seeks revenge. Cabrera, whose credits include WB Network's "Gilmore Girls" and NBC's "Studio 60 on the Sunset Strip," is repped by manager Adam Griffin at Kritzer/Levine/Wilkins Entertainment, Pakula/King & Associates and attorney Tara Senior. Ballerini, who recently appeared on Fox's "Terminator: The Sarah Connor Chronicles," is repped by manager Gina Rugolo, the Buchwald Agency and attorney Jodi Peikoff. … Tim Kelleher will pull his weight in the Will Smith starrer "Seven Pounds" and also will appear in the upcoming "Flash of Genius," starring Greg Kinnear. Kelleher, whose credits include "Matchstick Men," is repped by manager Lisa DiSante-Frank and Venture IAB. … Gil Birmingham is in final negotiations to join the cast of Catherine Hardwicke's "Twilight." The film centers on a teenage girl who risks everything when she falls in love with a vampire. Birmingham, whose credits include UPN's "Veronica Mars" and TNT's "Into the West," is filming director Hackford's "Love Ranch." He is repped by Amsel, Eisenstadt & Frazier. … Gonzalo Menendez has joined the cast of "12 Rounds" for Fox. He will play FBI agent Ted Baker, who goes on a wild goose chase with another detective. Menendez, whose feature credits include "Fantastic Four: Rise of the Silver Surfer" and "Fracture," is repped by Todd Justice at Venture IAB and Matt Sherman Management. … Luke Goss has joined the cast of the sci-fi feature "Tekken," directed by Dwight Little. Goss, who appears in the upcoming "Hellboy 2: The Golden Army," is repped by Insomnia Media Group and DW Management.