|John Beck (1943 - )
Not to be confused with the '30s-era actor of the same name
|Lawman (1971) [Jason Bronson]: Shot to death in a shoot-out with Burt Lancaster. (Thanks to Brian)
The Other Side of Midnight (1977) [Larry Douglas]: Executed (off-screen) by a firing squad; we only hear the shots while Marie-France Pisier is in her cell awaiting her own execution.
Dallas (I don't know the exact episode) (1984) [Mark Graison]: Killed in an explosion (off-screen) when his plane blows up over the ocean. He was "revealed" to still be alive in the 1985 season, but it was even later revealed that that entire season had been Victoria Principal's dream, and that he was in fact still dead.(Thanks to PortsGuy)
Deadly Illusion (I Love You to Death) (1987) [Alex Burton]: Shot to death by Morgan Fairchild while John is fighting with Billy Dee Williams in Morgan's office; Morgan was aiming for Billy Dee, but it's unclear who she hit until John collapses a moment later.