Bookshop on LJ is a huge Ryouma/Tezuka fanatic and has several rec pages for them.
I <3 tenipuri greatly, del.icio.us/qem/ficrec+tenipuri is my fic rec page for prince of tennis but I'm afraid I don't list pairings that often on there. @.@;
+1 for fleeting fancies, Becky does a really great job with a wide range of fandoms and she links a good range of fun and good fic. :)