Tesla has already been done. See this link
http://www.pbs.org/tesla/boutiq/index.html
I know there was also 2 movies about the life of Edison. Spencer Tracy played the lead roll in one of the movies. Seems to me that in the Tesla movie there was also information about the war between Westinghouse and Edison... AC vs DC but may memory is foggy on that issue. Maybe there was a seperate special on the Westinghouse vs Edison battle. Just can't remember.
Getting too old... mind not what it used to be.