We currently have this set up in store:
QNAP NMP-1000 Network Multimedia Player (
http://www.qnap.com/pro_detail_feature.asp?p_id=117)
Processor Sigma Designs SMP8635
Memory 256MB DDR RAM, 64MB flash
HDD Capacity 1 x 3.5" SATA I/II HDD, up to 2TB
LAN Port 1 x Gigabit RJ-45 Ethernet port
VFD Display 9 alpha-numeric character
Pretty much your typical HDD/Network based player.
Haven't tested it much, some of the navigation/UI elements are quite peculiar (setting up 'shortcuts' can be a bit of a pain), but it looks handsome, sports a VFD and sports NAS functionalities. I especially like the 'proper' shutdown feature it provides.