PBS
Pbs Frontline: Jesus & Jehohanan an Archaeological Note on Crucifixion
An article which summarizes recent archaeological discoveries regarding the practice of crucifixion. It notes that the Romans would use the arms and not the hands to nail someone to the cross.
Wikimedia
Wikipedia: Pontius Pilate
This open-source encyclopedic site gives some information on his governorship of Judea and his involvement with the crucifixion of Jesus.
Other
The Cross of Jesus Christ
A site from an ecumenical Christian community that collects the writings of early church fathers on the cross of Jesus, along with meditations and hymns on the same subject.