I had a lot of strong personal feelings about Asimov, and I knew him tangentially. I wrote an article about my experiences with him for the fanzine Mimosa back in 1997 (edited by rwl and nwl). You can find the article on my own webpage here; or you can read the article as it was originally published, with the original illustrations, here.
For more information on Asimov, there is a Wikipedia entry on Isaac Asimov at http://en.wikipedia.org/wiki/Isaac_Asimov
And finally, an excellent resource is the Asimov Online page at http://www.asimovonline.com
I still miss him.