KFC Twister. I thought my coworkers were pranking me when they told me they didn't sell them anymore so I went to KFC that afternoon myself to confirm. Still hurts
As far as recent items, I hate that most of the good Wendy's stuff are limited promotions. They must cost too much to keep stocked. They were both so good.
Instead, they keep the baconator which I think is gross.
The bacon and blue cheese burger from Wendy's.
And the fresco chicken sandwich, also from Wendy's.