Here’s a great example of a double stop intro riff – Sharp Dressed Man by ZZ Top! I still clearly remember this one day in Cancun, waiting for a city bus to come by, thinking it was going to be a boring, stuffy ride like all the others. Then this one particular bus pulls up, I get inside, and he’s got a 15″ speaker strapped to the center console, and it’s pounding out Sharp Dressed Man! What a great bus ride!
Anyhow, grab your guitar and get ready to rock!