Agree with earlier posts. There are guitarists who are brilliant technically (Vai etc), emotionally (Gilmour) and in terms of songwriting (Akerfeldt). These days I tend to look more fondly on the songwriting aspect (partially since I'm quite the poor technical guitarist myself) then emotionally, and finally technically. I dunno technical skill comes from practise, songwriting skill comes from something spiritual in my mind, which is why love music so dearly.
I can say in terms of bass though, I always enjoy some VWooten.