I believe the movie title you seek is "Misfits of Science", a 1985 TV
show whose pilot is broadcast now and again in reruns, and the pilot
episode was released as a 90-minute stand-alone movie. It's about a
group of people with super powers, and featured a very young Courtney
Cox as a telepathic hero.
Information about it at
"John "Johnny B" Bukowski, a rock musician who gained freak electrical
powers when he was caught in an accident with a set of amplifiers. He
uncontrollably absorbed electricity and could fire it as lightning
bolts or channel it into super-speed, but water caused him to short
circuit, burning him with potentially fatal results and forcing him to
retire as a musician."
Also, see the IMDB synopsis and cast at
http://www.imdb.com/title/tt0089602/ (click "More" under "Plot
"Left without jobs, Hayes and Lincoln decide to get a group of
'freaks' (including a telekinetic 17-year-old and a rock guitarist who
shoots lightning from his hands) together to rescue the Iceman and
stop their boss' reckless experiments."
There is more on Johnny B about 3/4 of the way down the page at
"Powers/Abilities: Able to generate electricity, allowing him to throw
balls of lightning. Also able to move at superhuman speed for short
periods. Contact with water could short his powers, causing
potentially fatal burns."
"History: Following a freak accident during a concert, when his
electrical guitar shorted out and hit him with 20.000 volts, rock
musician Johnny B discovered he could now attract, absorb and
discharge large amounts of electricity. Finding that water could cause
a potentially fatal short circuit, he retired from the music business
and sought help from Dr. Billy Hayes, who recruited the rocker for his
Misfits of Science."
And from http://www.tvtome.com/tvtome/servlet/EpisodeGuideSummary/showid-516/Misfits_of_Science/
"Pilot...Originally aired and later released on video as a single 90
minute feature movie" and the page at
http://www.innermind.com/sfc/lists/sfc9512.htm shows it aired on the
SciFi Channel again in 1995 (around the time of your other question
about the skeleton/detective movie).
Thank you for the opportunity to answer your question. Should you
require clarification, please request it before rating and closing
this question, and I will be happy to respond.
lightning fingers superhero
superhero lightning hands
"misfits of science" lightning hands
"misfits of science" water lightning