Floyd is awesome.
Others may disagree, But IMHO,
The Beatles, Led Zeppelin, Rolling Stones, Pink Floyd to name a couple are all bands that never need to even be mentioned.
These guys are the kings.
For the simple reason they are all what made/influenced most all music/musicians today.
Theres a few more but these are the major players IMO.
Even most Heavy Metal has its roots here in one way or another.