This year I had Pine Siskins coming to my thisle feeder, which was the first time I've seen them in my yard. They came for a few days in October and then again in early November, but haven't seen them since. This year I also have a Red-breasted Nuthatch coming to my suet, haven't seen her since 2005. Today was actually the first day that I have seen her!
On the home page of eBird there is a great article on this topic explaining the irruption pattern of each species.
