Question of the Day - What Sex Leads do you like in your TV Shows?

Welcome to another Question of the Day. Today's Question comes from Trish who asks.

"What Sex Leads do you like in your TV Shows?"

Interesting questions and one I've never before today thought about.

We have the Classic Male/Male lead. Examples are shows like Supernatural, Psych
Male/Female Leads - Fringe, X-Files, etc
Female/Female Leads - Rizzoli and Isles, Cagney and Lacey
Ensemble - LOST, Grey's Anatomy etc

I think I'd have to go with Male/Female leads as I find the dynamics a little more interesting.

So which type do you prefer and why and list examples of the shows in the comments below and vote in the poll.

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Thanks for all your suggestions and questions that you have been submitting, I try to pick out ones that I find interesting myself and that I think you'd all enjoy discussing. If I have not used one of yours yet, don't worry, it maybe tomorrows QOD!.