While many people claim that Colin Greenwood is a highly underrated bassist, his playing has always been impressive and has continued to get better over the course of Radiohead's eight albums. Whether he plays sparse lines with a delicate touch, or powerful overdriven grooves, Greenwood is an essential element to one of the biggest bands of all time.
Check out his work on Radiohead's "Where I End and You Begin":
Here is his steady bass work on "Bloom" from Radiohead's latest album The King of Limbs:
And here's one of our favorite Greenwood bass lines from "I Might Be Wrong":