Hes been mentioned on the forum in the authors and famous people that died of AIDS thread but I think he deserves his own.
http://www.asimovonline.com/asimov_home_page.html
HBO is set to produce a series based on his Foundation series:
http://www.thewrap.com/interstellars...btv-exclusive/
Loved these books esp. the post trilogy sequals written in the 80s.