Oh yeah. for the guitar players here that feel their ability is not getting any better. Questions: (1) What types of music are you listening to? Generally, musicians will only get as good as the music in which they listen to. If you are broad in taste, you should never run out of learning material. (2) Do you practice at least two hours a day on fundemental skills, i.e. technique and theory? Simply learning a peice of music doesn't teach the correct methodology of music, instead, try working on the content of the questions above, and disect the music that you are learning so you can get an understanding to what the writer was thinking.

Here are some choice guiter players I encourage all to check out:
Yngwie Malmsteen, Chris Durtra (Spelling on last name?; Dor-tray)
Steve Vai, Solemon Zai (Local teacher here at Indiana University)
Joe Satriani, Stevie Ray Vaughn
Steve Morse, John Petrucci (Dream Theater)
Jeff Beck, Leo Coktkey (Spelling on last name?; Cock-key)
Al De'Meola,
Joy Basu (MY guitar teacher for 8 years when I was younger here in Bloomington, IN., he now plays for Jessica Simpson, no kidding)