This is the cheapest i've seen it, and you know how hard it is to find deals on Mac's.
# Includes: Apple Remote, Power Cord, iLife '08, Mac OS X v10.5 Leopard, & Front Row.
# 1.83GHz Intel Core 2 Duo Processor
# 2MB of shared L2 Cache
# 1GB of PC2-5200 DDR2-SDRAM (expandable to 2GB)
# 2 RAM Slots (occupied)
# 80GB 5400RPM SATA HDD
# Slot-loading DVD-ROM/CD-RW Combo Drive - reads DVDs up to 8x, writes CD-Rs up to 24x, & writes CD-RWs up to 16x
# Intel GMA 950 Graphics Processor with 64MB of shared Memory (memory is shared with the main system)
# Ports - 1 10/100/1000 Gigabit Ethernet, 1 FireWire 400 (8 watts), 4 USB 2.0, 1 DVI Out, 1 VGA Out (using included adapter)
# Built-in AirPort Extreme Wi-Fi 802.11g wireless Network card