Here is Ebert's review of Deuce Bigalow, the Rob Schneider film, with the "speaking as a Pulitzer Prize winner" line. This is a classic
He also had a go at Conrad Black, when Black owned the Chicago Sun-Times. The Times reporters went on strike because Conrad was a cheap*ss boss and a jerk, and Ebert wrote a public letter supporting the strikers. Here's the letters that went back and forth. I think Ebert definitely won this one....