This made me nostalgic for John Bonham, and I found this video "What made John Bonham such a good drummer?"
[youtube]UvOm2oZRQIk[/youtube]
I always thought Bonzo had some kind of solid quality that I could never quite put my finger on, and I think this guy nailed it in this video: Bonzo played along with Jimmy Page's guitar, not the bass guitar like most drummers do.