As part of TNN's (now Spike TV's) answer to Cartoon Network's Adult Swim, Gary the Rat belongs up there with Sci-Fi's Tripping the Rift as far as terrible adult-aimed cartoons go. Honestly, entire episodes would go by without a single laugh - I'm surprised it lasted beyond the pilot, which was utterly grating. And this is coming from someone who enjoyed 3-South on MTV, a show that took the 'idiotic character' concept to ridiculous extremes.
Why Kelsey Grammar sullied his name with this garbage, we may never know, but at least TNN - sorry, Spike TV - won't be making the mistake of renewing it anytime soon.