As I can't find a photograph of my favorite icon--one I came across in the oldest remaining church in Romania--I will describe it:

It portrays Christ with a vine growing out of the wound in His side. On the vine are growing grapes that Christ squeezes in His hand, allowing the juice to flow into the chalice.

This struck me as particularly beautiful in conveying the unity between Christ and His body, the Church--there is such a oneness that the suffering of Christians is tied up in Christ's Eucharistic sacrifice.