Great?
Absolutely.
Greatest of all time?
Absolutely not.
No offense guys. I too grew up with those awesome Celtics-Lakers finals, I watched much of Bird's career, he's in the top 10 but he's not in the top 3. Problem is, it's hard to compare other players to centers; it's hard to compare Jordan, Magic, and Bird to Kareem, Wilt, and Shaq. That said, Jordan, Kareem, Wilt, and Magic are my top 4 players of all time.
This is my All-Time team:
PG Magic Johnson, Oscar Robertson
SG Michael Jordan, Kobe Bryant (and I really hate Kobe)
SF LeBron James, Larry Bird (although I love Dr. J)
PF Tim Duncan, Bill Russell (yes, I move him from C to PF)
C Kareem Abdul-Jabbar, Wilt Chamberlain
Alex.