I must be one of the few who actually liked Highlander 2. Yeah it had a LOT of massive, huge, problems in it and it didn't jive with the first one at all and a lot of left me really scratching my head. (Why come to attack McCloud? Why not just let him die from old age? Why even given him the opportunity to regain immortality?) But it was a movie I basically liked. Though anything with Sean Connery in it is likely to be watchable on some level or another.
But that's not to say the movie doesn't have a LOT of problems.