Captain Jack Harkness

I really liked him in Series 1. I know he has his own show now, but I havent seen anything other than those few episodes. He hasnt been in Series 2 so far, and wasnt in series 5. It was funny when he was flirting with Christopher Eccleston and when the droids were giving him a makeover. Quite the cheeky chappy. Was there much fuss about him not being straight when the show was originally on?