I haven't watched South Park since its first season in 1997. In fact, it hasn't really been on my radar for awhile.
But everyone seems to be up in arms about an episode last fall that Comedy Central has agreed not to re-air after complaints from Tom Cruise, so I decided to watch.
(View it for yourself by clicking the image.)
I don't see what the big deal is. That is, I understand why Cruise and Scientologists (and Jews, for that matter -- lost in the flap over Scientology is the part when Cartman says Stan is being "a Jew" when he wants to avoid spending money) are upset. But spoofs and satire of public officials are legal in this country.
Comedy Central had no legal reason to pull the episode from its re-run list.