Doohan, a Canadian, affected a Scottish brogue for his character, the stalwart ship's engineer who often pulled the U.S.S. Enterprise out of danger at the last possible second after complaining, "I've given her all she's got!" Doohan became a fixture on the touring "Star Trek" circuit, where he appeared at countless conventions and speaking engagements. Eventually, he contracted Alzheimer's and Parkinson's diseases and had to give up touring in 2004.
Star Trek premiered in 1966 and ran for two and a half seasons. After the show was canceled, its fan base grew, and the series eventually spawned two movie series and four TV spin-offs, including Star Trek: The Next Generation, Star Trek: Deep Space Nine, Star Trek: Voyager, and Star Trek: Enterprise.
Memorable episodes of the original series were "The Changeling," in which Scotty is "killed" while trying to defend Uhura from the rogue space probe Nomad; "Who Mourns For Adonis," in which Scotty gets zapped by lightining while trying to defend a female crew member from a phoney Greek god; "The Galileo Seven," wherein Scotty attempts to repair a damaged shuttlecraft while strange monsters attack the landing party; and "The Trouble With Tribbles," in which Scotty keeps his cool while a bunch of drunken Klingons call Captain Kirk a Denebian slime devil, but then throws the first punch when they dare insult the Enterprise.
The memory of James Doohan will live long and prosper.