Good question Dan!
Obviously Johnny Depp springs to mind but then again I'm always considering the naughty things I'd like to do with him in my mind!
I'd like to see someone to compete with Ziggy. The male testosterone would be flying around the house with thumping chests (naked ones preferrably), and arguments over who's sleeping with who etc. The other male needs to be more devious than Ziggy - someone to compete with
Thinking about male number two because I know BB and there will be the 'token gay guy' who will be typically like a mixture of everything you imagine a gay guy to be like. It always seems to happen and is a disgrace.