Share your home server setup

I'd be interested in knowing what services you use on your home servers. Please include your OS, hardware, software and network specs.

Here is mine at the moment:

Hardware:

Old custom built box from a few years back.

3 Sata HDs 1 80GB for OS, 1 1TB for Data + Movies, 1 300GB for Music, and 1 external 1TB for backups

Core2Duo E6550 2.33GHZ

4 GB Ram

OS:

Windows Server 2008 Standard as host operating system (DNS, DHCP)

Services:

Oracle Virtualbox for VMs

uTorrent server on XP VM as WebGui torrent server downloading to a directory on my 1 TB data drive

Air Video Server for streaming my video to iPad and iPhone from anywhere in the world

Ubuntu 12 Desktop VM as an FTP server