Broken seal? under car

So yesterday I saw a small WATER puddle under my car. I looked under and saw this: (pics)
http://i66.tinypic.com/3537fko.jpg

Anyone know that circular part is?

Is this from the back side of the engine kind of on passenger side. That rubber you see is from the subframe bolt kind of normal for the rubber to get old and fall apart. I suspect your leak is moisture (water) from your a/c. Did it feel oily or have any smell?

No smell, no texture. Just water.

I took the pic from the passenger side, the front of the car would be on the right. So yes, it's looking at the engine from the back.

As harleyguy said, that is the subframe mount/bushing. The AC evaporator drain comes out of the firewall on the right side and could potentially get that area wet.