This is all from the Hawk list:

Wally Kilburg recomends Motul Factory Line Chain Lube.  

It goes on dry, sticks due to some chemical they add, Boron or something,
but man this stuff lubes and lasts like nothing else I've EVER seen. The
Motul rep gave me several cans to try out and its fantastic. Goes on
white too so its easy to see where you started...then dries clear. No
mess, seriously. They make several varieties and I've tried most of them
since he gave me samples of all of them. The Factory Line works best for
on road applications.


Motorcycle Consumer News did an extensive article on chain lubes in                    
September 2001; here are the top 6, in order according to their test:                  

PJ-1 (black can)
Kawasaki K-Kare Foaming
Yamaha "Performance"
Pro Honda HP Lube
PJ-1 (blue can)
Torco Power Slide Titanium