Ooh. I like that one a lot! Anomia (the inability to recall the name of a thing or a noun) gets used around my place a lot, though it is more of a state than a feeling.

I also like "anamnesia", which is the sense that you've just remembered something that you've forgotten. Philip K. Dick talks about it a lot with regards to religious revelatory experience — having a revelation, for instance, that he was actually living some kind of Biblical metaphor, only instead of feeling like…