Killer who cited Metallica lyrics executed 09:58 PM CST on Tuesday, January 25, 2005 Associated Press Excerpt from http://www.dallasnews.com/sharedcontent/dws/dn/latestnews/stories/012605dntexexecute.4995f.html HUNTSVILLE – A condemned killer who twice avoided execution last year when courts halted his punishment on the day he was to die was executed Tuesday for a slaying in Corpus Christi more than 20 years ago. The execution came after the U.S. Supreme Court refused on a narrow 5-4 vote to block Troy Kunkle's execution. Kunkle was contrite as he looked toward the daughter and son-in-law of his victim, Stephen Horton, and sought their forgiveness. "I would like to ask...