|The Great Escape (1963) [Lt. Cmdr. Eric 'Disperal' Ashley-Pitt]: Reportedly shot in the back by German soldiers at a train station, when he creates a diversion to save Richard Attenborough. (I haven't seen this movie myself yet.) (Thanks to Robert and Garrett)
The Great Adventure: The Siege of Boonesborough (1964) [Captain Hanning]: Reportedly shot to death by Peter Graves. (I haven't seen this episode myself.) (Thanks to Garrett)
The Greatest Story Ever Told (1965) [Judas Iscariot]: Presumably commits suicide by hanging himself. (I haven't seen this movie, so I don't know whether it actually depicts Judas' fate or not.)
Frankenstein: The True Story (1973) [Dr. Henry Clerval]: Dies of a seizure or heart attack in his laboratory. His body is shown again afterwards when Leonard Whiting discovers him and decides to save his brain by transplanting it into their new creation (Michael Sarrazin).
The Haunting of Morella (1990) [Gideon]: Commits suicide by deliberately dropping a lantern at his feet, causing both himself and Nicole Eggert to burn to death.
The Outer Limits: Feasibility Study (1997) [Joshua Hayward]: Reportedly turned to stone, along with his daughter (Laura Harris) and the other abductees, when they deliberately expose themselves to the alien virus to prevent the aliens from invading earth. (I haven't seen this episode myself.) (Thanks to Garrett)