One of CCR's best is their cover of the classic Screamin' Jay Hawkins blues tune. Some of John Fogarty's best guitar work. Great stuff.
I think this is one of the best guitar solo's of all.
The congregation I attended in college (early 70s) had a version of this that we used as a worship song. The verse lyrics were re-written:The Band - I Shall Be Released
It's a good solo, but for me it's going to have to take something spectacular to top this one (be it the studio or live version).