While both Berkeley and Hume are today wrongly classified at empericists (they were in fact idealists), Hume’s “philosophy” is much more rich in the bad ideas that would effect the future of philosophy. The positivists, for example, were strongly influenced by Hume, but mostly dismissed Berkeley, I think.
Regi
Richard Gere said that Bishop Berkley was his favorite philosopher. So you have Hume-> Positivists vs. Berkley-> Gere.
But seriously though Berkley was the first philosopher to make the claim that language can be used fora variety of things besides describing things. He was extremely important.
Also...
http://www.freerepublic.com/focus/f-news/1179639/posts