I watched this film last night and really enjoyed it. I like Luc Besson films. Leon was another great film of his that I enjoyed. Nikita is a wild woman who is a drug addict that kills a cop but is given a second chance to work for the French government as some sort of assassin. A bit of an unbelievable plot however, the acting is great and direction even better, The story is fast paced and the style has been imitated but not bettered.
I haven't seen any of the TV series but I don't expect it to be as good as the original film.