"Serving cartoon watchers the world over since 1988." [from Episode 70]
All S1
"This show is the most fun you can have without marinara sauce." [from Episode 71]
"When they invented television, this is pretty much what they had in mind." [from Episode 72]
"I haven't had so much fun since Nermal fell in the mud!" [from Episode 73]
"The following is made possible by a grant from the Lasagna Manufacturers of America." [from Episode 74]
"Hey, don't get jealous just because I have a theme song and you don't." [from Episode 74 in syndicated airings only]
"Today's show is dedicated to loyal and courageous pizza delivery persons everywhere." [from Episode 75]
"Keep your tickets handy. We'll be raffling off in Turkey at the end of the show." [from Episode 75 in syndicated airings only]
"If you can find a better show on television, watch it!" [from Episode 76]
"If this show were any more entertaining, we'd be on pay-per-view." [from Episode 77]
"If you like this show, tell a friend. If you don't like it, my name is Heathcliff." [from Episode 78]
"Where else can you get this much comedy for your viewing dollar?" [from Episode 79]
"Hey, sit back and relax. This is television. It's good." [from Episode 79 in syndicated airings only]
"The only cartoon show that comes with a double-your-money-back guarantee." [from Episode 80]
"And for my next trick, I will make the rest of the show magically appear!" [from Episode 81]
These quotes come from Wikiquote's Garfield and Friends pages and are available under the Creative Commons Attribution-ShareAlike License.