there probably is no recourse anyone can do about a show like this, to be perfectly honest. Legally, there is no defamation of any group unless what they portray in the show is false. If they have written consent by the parties to (trust me they do
then you cannot fight them just because it sends a distinct message about the greek system to others.
And since someone mentioned it is a local group, not a nationally recognized one, NPC or NIC can't get involved either because they are not associated with them. So what can you do? Well, for starters, don't give them a reason to continue the show. Don't watch it and give them ratings, write them letters explaining your position and why you feel this is a bad idea. Basically, there is nothing much else to do, sorry.
RUgreek