Awsome post.hmmm...here is a link to do just that(among other things)

http://www.ibanezrules.com/tech/grunge/grunge_3.htm

I used the steel wool.You can pick some up at home depot(the 0000 grade stuff)and the fretboard,if it hasn't been cleaned in a while(or ever)will look and feel brand new.Just wear a towel around your face,cuz that stuff smells bad.

If you want to get real serious about it,go to stew-mac.com and get...

http://www.stewmac.com/shop/Fretting_supplies/Fretting_tools:_Fret_dressing,_polishing/Ceramic_Fret_Polishing_Wheels.html

and http://www.stewmac.com/shop/Fretting_supplies/Fretting_tools:_Fret_dressing,_polishing/Fingerboard_Guards.html

and http://www.stewmac.com/shop/Fretting_supplies/Fretting_tools:_Fret_dressing,_polishing/X-Treem_Metal_Polish.html

I looked into what oils work for ebony.It dosn't soak up lemon oil as well as rosewood so it simply needs to be applied a couple of times.