Oh...OK then (to make it 100!)

(In no particular order) some of my favourites:

Pat Metheny
Paco Pena
Steve Tibbetts
Taj Mahal (simple but so tasteful
Eric Bibb
Ani DiFranco (highly original and underestimated a master of unusual tunings and dynamics)
Isaac Guillory (one of the best I saw live - brilliant bass runs and lead played together - very sadly R.I.P. not long ago)
Blind Blake

Re: the Keith Richard discussion above, not a showy guitarist but I personally rate him as a melodic genius!

Peace,

moo