Keith Richards has taken swipes at a number of bands during interviews he has done about his own solo project. In one, the Rolling Stones guitarist characterized the Beatles Sargeant Pepper album as 'rubbish'. In a recent interview with Rolling Stone, Richards targeted Led Zeppelin saying that while he considers Jimmy Page a great guitarist, he always felt that Led Zeppelin was '...a little hollow' as a group. He also commended drummer Keith Moon as being the perfect drummer for Pete Townshend, but said the drummer was a 'disaster' when it came to doing sessions with any artist or band outside of the Who.
RollingStone.com