Yes, last season's NBA Champion was from the Eastern Conference, but only by virtue of Stern gangraping the Spurs in the conference semis.
2006 NBA Champion Miami Heat*
*Spurs screwed by refs in games 2,3,4 of wcsf (coincidentally all mavs wins, hmmm), Bavetta + Nowitzki = <3, Javie + Cuban = <3, Ginobili is stupid, no-call on the Duncan putback at the game 7 regulation buzzer
Really, I could put 30 asterisks on the Miami Heat's trophy last year. The fact that they won doesn't make East team's like the Cavs any better.