Roselyn Sanchez has signed with Luber Roklin Entertainment. The actress co-stars on CBS' "Without a Trace" and most recently appeared in the film "The Game Plan" opposite Dwayne "The Rock" Johnson. She continues to be repped by UTA and attorney Bob Wallerstein. … Marisa Coughlan has signed with Mosaic Media Group for theatrical and literary management representation. Coughlan most recently starred in Lifetime's "Side Order of Life" and is appearing opposite Aaron Eckhart in the feature film "Bill." Her other credits include ABC's "Boston Legal" and the films "Super Troopers" and "Teaching Mrs. Tingle." … Jurnee Smollett has signed with ICM. The 21-year-old, who most recently appeared in "The Great Debaters," was first seen at age 11 in "Eve's Bayou." She also is repped by manager Jon LeShay and attorney Darrell Miller. … Michael Gross has signed with Richard Kerner at KMA for management representation. Gross, best known from the sitcom "Family Ties," is a classically trained actor from the renowned Yale School of Drama. His credits also include roles in the "Tremors" film franchise as well as NBC's "ER," CBS' "How I Met Your Mother" and the HBO movie "Mrs. Harris." He continues to be repped by Silver, Massetti & Szatmary. … Production designer Richard Toyon has signed with Paradigm. His credits include HBO's "From the Earth to the Moon," NBC's "Boomtown" and J.J. Abrams' HBO pilot "The Anatomy Against Hope." … Former APA television literary agent Michael Pelmont has joined New Wave Entertainment. Pelmont has represented a host of writers and showrunners working in late-night, comedy and alternative programming, including such series as Comedy Central's "The Daily Show With Jon Stewart" and "The Sarah Silverman Program," HBO's "Curb Your Enthusiasm," Showtime's "Weeds" and NBC's "The Tonight Show With Jay Leno." It is expected that most of Pelmont's clients will join him at New Wave. … Philip Alberstat, former agent in William Morris Independent's film packaging division, has been named COO of Insomnia Media Group, a full-service entertainment company. Alberstat will focus his efforts on deploying the financing of films, acquiring high-profile projects and overseeing the deal flow of IMG while working closely with chairman Bret Saxon and CEO Jeff Bowler. The news follows Egyptian-based Borak Holding's recent $550 million investment into IMG.