Spanish Guitar

By "spanish guitar" do you mean flamenco, folk music, or the wealth of classical music for guitar by Spanish (and Latin American) composers? If the last, there's a wealth of material in the Naxos Guitar Series: every one is wonderful, and strongly recommended. A good place to start would be the discs by Jason Vieaux (also his discs of Ponce and Albeniz on Azica) but you can't go wrong with any of them.

Agree with Peaks, Jesse Cook "Vertigo" & "Free Fall" (A little more worldly)
You can add: (Mellower) Govi "Andalusion Nights", Armik "Romantic Dreams",
Chris Spheeris "Eros"
All of these are superb !

Agree with Darrenlite about Ottmar Liebert. Also try Gypsy Kings and Luis Villegas.

Pepe Romero - Spanish Classics, or Latin American Favorites (these are titles). Or anything Spanish of his;he has many CD's, and is a real Spaniard from Andalucia. Has some Flamenco recordings as well. The best.

for 'real flamenco' guitar (old school):
Paco de Lucia, Carlos Montoya, Los Romeros (the 'gran family' of flamenco guitar)
for new school: Tomatito
for 'folk' flamenco: EA
for flamenco 'melange': Radio Tarifa
for the most accessible but truly gyspy inspired: Gypsy Kings
PS: Otto and the like are NOT flamenco, they remind of supermarket sushi!