Jorge Prelorán, a pioneer in the field of ethnographic documentary film and a professor emeritus at the UCLA School of Theater, Film and Television, died March 28 in Los Angeles following a 10-year battle with prostate cancer. He was 75.

A cinematic icon in his native Argentina and a UCLA alumnus, Prelorán taught at UCLA from 1976 until his retirement in 1994. He was the recipient of the school's first International Cinema Artist award in 2008.

Bud Shank, a flutist and alto saxophonist who worked with a variety of jazz greats as well as famous pop acts such as the Mamas and the Papas, has died. He was 82.

Shank died Thursday of pulmonary failure at his home in Tucson, Arizona, according to his Web site and JazzTimes magazine.

Fortissimo Films co-founder and chairman Wouter Barendrecht died Sunday in Bangkok of heart failure. He was 43.

Barendrecht was in Thailand to screen a rough cut of Fortissimo's latest film, "Nymph," and had just left a busy Filmart in Hong Kong.

Updated Thursday morning:

Joseph Helfgot, founder of the leading movie research firm MarketCast, a sociologist-turned-sex-advice-columnist-turned-Hollywood marketing guru, died from complications of a heart transplant on Wednesday in Boston.

He was 60.

Helfgot founded MarketCast in 1985 and sold the company to Reed Business Information in 2000, but stayed on as president, while moving his family to Boston.

Dave Arneson, co-creator of the role-playing game Dungeons & Dragons, died after a two-year battle with cancer in St. Paul, Minnesota, his family said Thursday. He was 61.