Has anyone else experienced Deja Vu (am I even spelling it right?)

Lately, I keep having very strong Deja Vu feelings - especially when I'm doing work related things. It keeps happening a lot lately. The past few days, I've had the feeling atleast once a day, sometmes a few times a day. Its weird and very unsettling.

Anyone else feel like this? Does it usually have any sort of meaning?