Sorry, today I've only got PR1 and PR2 domains for you. But by this evening I'll have a few good PR3s, so check back!
I recommend that you register them at GoDaddy.com

desoye.net (PR2)
ahadinternational.net (PR2)
louharrison.net (PR1)
inspiratorerne.net (PR1)
freeformo.net (PR1)
derteufel.net (PR1)
affordablehealthins.net (PR1)
yerbarium.net (PR2)
petalo.net (PR2)
yeticonsulting.net (PR1)
schlecht-im-bett.net (PR1)
savannastudio.net (PR1)
phonerecording.net (PR1)

I register all my domains at GoDaddy.com, they have the best deals.

UPDATE: Here are some more, two of which are PR3
SCARC.US (PR3)
API653.NET (PR3)
SANSKRITI.US (PR2)
MMORPGAUCTIONS.NET (PR2)
CASTLE-RHINELAND.NET (PR2)