One itty bitty (about 1/4 inch in diameter) flower of a Kalanchoe http://en.wikipedia.org/wiki/Kalanchoe cluster.

Five more buds in the cluster have yet to open. This is the only Kalanchoe variety in my house plant collection that has a frilly, more than 5 petal blossom.
The plant is itself still a "baby" at only 4 inches tall. As it grows, the blossom clusters will become larger; however, each indivdual flower will still remain tiny. It is amazing to find such detail in something so small.