Supposedly dry, but I put on a VERY thin layer of sealant in order to hold it in place on the head. I discovered a couple years ago that Toyota makes 2 slightly different intake gaskets now; the earlier one doesn't have a little rubber seal around the coolant passage orifices, whereas the newer one does. Both now integrate the EGR gasket towards the back as well.

With that being said, take a good look at your EGR before putting things together, and make sure you've got the carbon cleaned out of it. <img src="/forums/images/graemlins/kewl.gif" alt="" />