Medium shrub with showy pink flowers

linear , entire leaves on short stiff branches

 

Looks a lot like a begonia. Are you sure it's a shrub?
A begonia it will have snappy, fleshy branches, not woody.

 

Check out Dodonaea viscosa. The pink objects are fruit, not flowers.

 

I'm not sure the Dodonea has such pointy leaves

 

yes its a shrub not Begonia as the leaves are not fleshy

 

It often does; see e.g. here.

 

good point, Michael.
But, look at the shape of the leaf in the pic that jaistar12 posted - where the petiole meets the leaf in that off centre way. Classic begonia.

and, check out this pic of begonia seeds
http://tinyurl.com/bmg46zq