Actually Highlander had two sequels. The second one was set in the future where the main guy (Chris whateverhisnemis) invents a machine to replace the ozone layer. Sounds pretty stoopid already right? And Sean Connery, who was killed in the first movie, comes back to life to help him. Then there was a third that I haven't seen, which I imagine was probably even worse, and even a TV series, which was appalling. Ricarliette, the people were immortal, except you could kill them by chopping off their heads. Sort of worked in the first one, but after a while the premise wears thin since it doesn't really make any sense...