fUnc sUrface is highly recomended. I have tried one at my friends house and he has a Logitech mx500 mouse and works flawlessly even though it is optical. Also I hear from reviews that the ratpadz or however you spell it isn't that responsive for optical mice.
Only $20 on newegg and retail.
http://www.newegg.com/app/ViewProduc...=BROWSE&depa=1
Don't just take my word for it,
Tech TV review:
http://www.techtv.com/freshgear/prod...422496,00.html
and
PC Gamer Review:
http://www.act-labs.com/func_pcgamer.htm
I will soon buy one, you shoud too!
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Asus A8N SLI - Opteron 148 @ 2.8 under a Zalman 7000cu LED - XFX 7800GT oc'd - 1gb Kingston Hyper X pc3000 BH5 2-2-2 - OCZ ModStream 450watt - WD 36gb Raptor - WD 320gb Storage Drive - Antec Super LanBoy - NEC 3550A 16x DVD Burner
Accessories:
ViewSonic VA1912wb 19" 8ms Widescreen - Plantronics Audio 90 - Logitech Z-640 5.1 - Razer Diamondback Plasma LE on a Ratpadz GS
Linux Box:
Pending..