I've mentioned this in replies to other threads, but I figured I'd post this separately for people. While I find the sudden fixation on officiating due to the last game (and a bevy of other high profile incidents year-in-year out), so often the analysis of supposed referee bias and "playoff-extending conspiracies" is compromised by fan allegiance and emotion. And most frankly, severely wanting methodology to support any claims.
For those like myself who prefer a more rigorous and objective look at this contentious subject, I recommend this paper by economists (I believe) John Price, Marc Remer, and Daniel Stone, published in December 2009: "Sub-Perfect Game: Profitable Biases of NBA Referees"
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1377964 is the link, which hopefully works for you all (I get access through my University).
The conclusions are interesting. I haven't read it closely enough to say whether I think their methods hold up or not, (sorry, my grad school brain has been occupied by other research!) but its definitely worth a perusal. Personally, as much as I enjoy the speculation of blogs and message boards, I prefer to see more rigorous research of this nature (even that which refutes the above paper's claims) to shed light on this topic. That way, we fans can get back to enjoying the game itself, not speculating about the people managing the game.