For me I have been actively associated with astronomy since 1988, however my other real passion is mechanics (I'm a petrol head from way back) and in particular my LHD Chev Corvette but I like to modify and tinker with a motor scooter I have (serious sports modifications) and a Ford capri of my wifes.
I have enjoyed kites but particularly traction kiting (land based not water) for 10 years and still get out every chance I get.

I was a photographer with herald Sun for many years and still enjoy photography, have the darkroom equipment but presently no darkroom for it.
I took up guitar last year and am really enjoying it still, I imagine this will become a lifetime passion for me.
RC cars used to be a passion but family slowed me down.
RC aircraft but learnt to hate gravity.
Sex but it would be heaps better if my wife took the hobby up too.