Well I've got some rare mounts myself but I can't show screenshots since I've never bothered taking screenshots.
Here is my short list of rare mounts which probably pales in comparison to you guys ^_^
Azure Drake (first time ever drop! I didn't even know it was a mount drop!)
Ashes of Al'ar
Blue Proto Drake
Drake of the South Wind (Yeah the Al'akir one!)
Thundering Onyx Cloud Serpent (Not sure if it counts but I've won it 3 times)
and the White Hawk strider!
That's all my rares