Jingle Fett said:
The storyline where Boba Fett survived was actually really well executed and it's more than plausible for him to survive. The sarlacc takes a thousand years to digest anything (stated directly in the movies) and this combined with Fett being covered head to toe in body armor (and said armor being very high quality and having a small built in oxygen supply) means he would definitely be alive for at least a little while inside the stomach.
See, this is part of the reason why I stopped caring about the EU; authors often wouldn't stop and think things through for a bit.
I always interpreted the "thousand-year digestion" quote as deliberate exaggeration on Jabba's part to psyche his victims out. It's hard to believe that such a large creature would get by on such an inefficient digestion system, particularly when it's burning calories with those flailing tentacles and beak mouth. Even if it did take a thousand years, wouldn't the victim die of thirst or starvation long before that point? Are they saying the Sarlaac somehow keeps its prey alive by sustaining them with nutrients...
while it's digesting them? Even if that were the case, wouldn't the victim die of old age? It just raises too many questions.[footnote]As you can probably tell, I've never read the books that describe how Boba supposedly escapes.[/footnote]
You see this happening in the prequels as well. Palpatine's single line about the Republic that has "stood for a thousand years" contradicted EU sources that stated the institution was over 25,000 years old. Rather than reaching the more logical conclusion that Palpatine simply misspoke and used the word "years" when he meant "generations," EU authors rose to the occasion to make an overly convoluted explanation to reconcile it.[footnote]http://starwars.wikia.com/wiki/Ruusan_Reformation[/footnote]
Some EU authors took the line in
Attack of the Clones about 200,000 clone trooper "units" with "a million more well on the way" to mean that the "Grand Army of the Republic" consisted of 1,200,000 troops. That number may seem impressive...until you realize that the United States military is larger. [http://en.wikipedia.org/wiki/United_States_Armed_Forces#Personnel] Given that the U.S. has difficulty maintaining bases and combat deployments on Earth alone, would you expect an army of comparable size to be capable of waging war on a
galactic scale?! It makes far more sense when you consider "units" as divisions or armies, but no. Many EU sources stubbornly insisted that each "unit" meant a single clone trooper.
In short, EU often got silly, even for a setting that features space wizards and laser swords. Nerd rant over.