Watch the Mark Knopfler online guitar lesson by Jeff McErlain from Kings of Tone
I am a big fan of Mark Knopfler's tone and approach to guitar. The main thing to note about him is that he doesn't use a pick. This produces a softer, warmer attack, but it also allows you to snap the string and get that characteristic pop he coaxes out of his guitars. Other notable players who don't use a pick are Wes Montgomery, Jeff Beck, Lindsey Buckingham, Albert King, and Albert Collins.