Iommi/Butler already well covered so I'll go: Lemmy/Fast Eddie. Another unique combination with Lemmy playing rhythm guitar on bass with lead and double stops on top by Fast Eddie.
Tony Levin and David Rhodes in Peter Gabriel's band are an awesome pairing. Rumours of a new PG album mean we may get one more go-around.
Good example. John was reliable when the drummer was not. John has often mentioned that he had to keep time because Keith would beat to his own drum .
The brothers Greenwood The brothers Meat Frank Black & Kim Deal Thurston Moore & Kim Gordon Ler & Les
Not sure if anyone mentioned Paul and George yet, but just listen to the Beatles "Rain" or "Paperback Writer", just a phenomenal guitar/bass combo. Especially the "mid period" Beatles
Alex Lifeson and Geddy Lee, absolutely the top. All those decades together from childhood to old age. There's no way that any pair could be this tuned into each other.
Yes! I'll also throw in a vote for John Strohm and Juliana Hatfield, and one for Roger Miller and Clint Conley
The Who : Pete Townsend, the drummer and John Entwistle, the guitarist. Free : Paul Kossoff, the drummer and Andy Fraser, the guitarist. Great, unique combinations. Where the guitarist lays the simple groove and the bassist the melody. Turns the usual roles around.