I don't know how you feel about Secular music, but pick up Stevie Ray Vaughn. He's an awesome blues guitarist, lots of riffs that he uses in today's traditional and even contemporary gospel. His music is like rated E for everyone, so you don't have to worry about the lyrics being bad.
Go to walmart.com click on the music, and type in his name to hear some of his samples.
For rythm guitar, get the Dave Matthews band collection, his rythm and style is awesome, it's a mixture of blues, funk, pop, and a teaspoon of rock mixed together.
Also for a mixed of rythm and soloing, get the John Mayer collection. He was inspired by stevie ray vaughn, and his playing has some soul. His is a blues feel with a contempory pop/urban feel, and you won't be disappointed.
If you like jazz, you can't go wrong with George Benson or Stanley Jordan. For more of the traditional jazz guitar get Joe Pass (very smooth tone) and to me is one of the greatest.
If blues/rock style then i would say Jimmi Hendrix - although this being a christian website, i wouldn't recommend it for the fact was he was a druggy and he got high on his recordings... but he uses a lot of minor and major pentatonic, which is mainly used in gospel, blues and rock...