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I remember this! It was in Nickelodeon Magazine. Pretty sure it was actually around 2004-2005, but not completely sure. I'll see if I can find it. Update: I am not having luck finding it, but I might still try. I also feel like this was called "A Show Of Hands" or something, and likely originated in an April issue(probably 2004 or 2005), which was always cartoon themed. This comic was reprinted in a Nick Mag Presents comics issue I got in 2008. A few years ago I got a bunch of 2004-2006 issues from a thrift shop, and am pretty sure this was in one of them. It's not impossible, but would be very hard for me to access those copies. I'm afraid it would also be weeks before I even have the chance. Really sorry I couldn't be more help.
Edited by ProbeMeRogerSmithI specifically remember(likely not in order) Homer Simpson, Spongebob, Power Puff Girls, Garfield, Sulley, Batman, Snoopy, Scooby Doo, Angelica Pickles, Spiderman, The Grinch, and George W. Bush.(Possibly Bugs Bunny?) Pretty sure that was all there was, not many more if not. I also remember each character showed up in exactly two panels, consecutively, except Homer who appeared again at the end.

A single stand-alone comic page I read in a kid's magazine sometime in the early 2000s. The premise was that there were so many characters in the comic that they could barely fit. Each panel would be a single body part (usually the hand) of two different famous cartoon characters, and it was a guessing game to figure out who they were.
It opened with Homer Simpson finding his donuts stolen. In the next panel, he asks for help from... someone, then perhaps in the following panel that someone accused Garfield of the theft, and in the panel after that Garfield suggests that Scooby-Doo can find the thief, and it goes on like that for a few dozen tiny panels all squeezed into a single page. SpongeBob was in there somewhere, and Sulley from Monsters, Inc., the Powerpuff Girls, Batman, and many others I don't remember. It ended with Spider-Man accusing the Grinch, then the Grinch confessing and George W. Bush thanking him for his confession, and finally Bush giving Homer a new box of donuts.
I don't remember exactly what magazine it was in or what month and year it was, but it was obviously during the George W. Bush administration, almost certainly within the first half, so around 2001-2003. If a scan of the strip exists online, I'd certainly like to see it.
Edited by trulymadmoves