Emprex 3009URF III
A cheap, but in my experience decent, keypress-sending remote which uses 2.4GHz RF rather than IR. Range is good and it works even if pointed directly away from the TV, also my XBMC box is directly above my wifi AP yet no interference is apparent. All basic functionality such as volume, navigation, information and subtitle control OSD works well out of the box in XMBC 11.0 Eden running on Debian. (It also worked in LinuxMCE although some configuration was required.) I haven't tried to configure the colour buttons etc. The power button does not cause a suspend/power off but is noticed by the system (screen undims) and so could presumably be made to work.
Vendor appears as "Behavior Tech. Computer Corp." aka "BTC" in lsusb and /proc/bus/input/devices respectively.
I: Bus=0003 Vendor=046e Product=5578 Version=0111 N: Name="BTC USB MCE Cordless Remote Control." P: Phys=usb-0000:00:12.1-2/input1 S: Sysfs=/devices/pci0000:00/0000:00:12.1/usb2/2-2/2-2:1.1/input/input7 U: Uniq= H: Handlers=kbd event7 B: PROP=0 B: EV=1f B: KEY=837fff 2ff3b7 bf2d4c44 0 0 1 f84 8b37c000 667bfa d941dfed 9e0000 0 0 0 B: REL=40 B: ABS=1 0 B: MSC=10