I haven't seen or don't remember enough of this to rate.

Scooby-Doo, Where Are You!, on CBS
CN UK; CN Wiki; IMDb; Retro Junk; Scoobypedia; TV.com; TV Tropes; WB Kids; Wikipedia

Actually I haven't really seen much of this, but it is a classic, so it needs to be included here. I dunno, maybe I watched some reruns of this when I was a kid, I don't really remember. But I've probably seen a bit of it when I got older, and decided I wasn't really that interested. But like I said, it's a classic, and it is essential for everyone to at least watch enough of it to be passingly familiar with the franchise. And this is probably the best of the various Scooby series, as well as being important as a pop culture reference, particularly in Buffy the Vampire Slayer. Anyway, as to the plot (though I'm sure you're already aware of this), this group of meddling kids (Freddy, Daphne, Shaggy, and Velma) drive around in a van called the Mystery Machine with their talking dog, Scooby-Doo, investigating ghosts and whatnot, and ultimately revealing sinister plots by various folks who would have gotten away with it, if not for them.

There have been several other Scooby-Doo animated TV series that I mostly haven't seen or cared about at all. And there were a couple of live-action movies based on the series, Scooby-Doo and Scooby-Doo 2: Monsters Unleashed. And there's a long-running series of direct-to-video movies (see below). There was also a short TV special called Night of the Living Doo.

animation index
detective index
animation nostalgia

Scooby-Doo: direct-to-video movies
Zombie Island * Witch's Ghost * Alien Invaders * Cyber Chase * Legend of the Vampire * Monster of Mexico * Loch Ness Monster * Aloha * Where's My Mummy? *
Pirates Ahoy! * Chill Out * Goblin King * Samurai Sword * Abracadabra-Doo * Camp Scare * Legend of the Phantosaur * Music of the Vampire * Big Top *
Mask of the Blue Falcon * Adventures: Mystery Map * Stage Fright * WrestleMania Mystery * Frankencreepy * Moon Monster Madness *
KISS: Rock and Roll Mystery * Lego: Haunted Hollywood * WWE: Curse of the Speed Demon * Shaggy's Showdown * Lego: Blowout Beach Bash *
Batman: The Brave and the Bold * Gourmet Ghost * Curse of the 13th Ghost * Return to Zombie Island * Scoob! * Happy Halloween