"After reviewing hundreds of hours of 'Shark Week' footage and consulting with leading ichthyologists, CBS News can now confirm that the so-called 'Land Shark' made famous on 'Saturday Night Live' is a hoax," Katie Couric assured viewers. Meanwhile, over on MSNBC, the crack news team continued its in-depth exposé on "SNL's" faked assassination of the Little Rascals' Buckwheat. Sleuths working for The New York Times revealed that not only was John Belushi not an Olympic decathlete, but his touted regimen of cigarettes and "little chocolate donuts" was, according to experts in sports medicine, "not even remotely nutritious." Meanwhile, a report...