The 6-foot-7 actor, who also starred in the 1950s sci-fi classics "Them!" and "The Thing From Another World," thanks fans for their support with a posthumous letter on his website. James Arness, the tall man who towered over TV screens for 20 seasons as the iconic Marshal Matt Dillon on CBS’ Gunsmoke, has died. He was 88. The 6-foot-7 actor, who also starred in the 1950s sci-fi classics Them! and The Thing From Another World, passed away of natural causes Friday in his home in Brentwood, according to his business manager, Ginny Fazer. His death comes 14 months after his...