VCplus is a program (windows service) that can add additional information into your VirtualCenter environment. It is brought to you by Richard Garsthagen and Run-Virtual.com.
The current functionality adds include:
Displays disk usage of each Virtual Disk (seen from within the VM)
Shows if a Virtual Machine has a snaphot
If a Virtual Machine has a snapshot, it show the total size of the snapshot disk files
Allows you to sync the DNS name of the VM to the Display Name of the Virtual Machine
Download VCPlus 1.0 Beta, here.