So far, my favourite plant acquisition this year is Serruria florida (Blushing Bride).
It's a member of the proteacae and thrives in poor, dry soil: I have it in a pot with an Australian Native potting mix and I water it sparingly.
It is not only an attractive plant, but also has a great story behind it. Earlier this century, the plant was considered extinct in the wild, mostly due to overpicking by humans: the delicate, papery, pink-white flower was prized in Victorian era bridal bouquets. And then there was a bushfire in the Franshoek mountains, and seeds that had been lying there for decades were germinated. Now the plant grows in the wild again.
My second favourite acquisition is Loropetalum chinense var rubrum[updated link]. It's just gorgeous.