Season 1 rated
Basically a belated continuation of/homage to The New Scooby-Doo Movies (1972), but thankfully abandoning that series 43 minute format, and returning to the standard 22 minute. As in TNSDM, each episode features a guest star or stars (some real-life, some fictional).
Revenge of the Swamp Monster (Chris Paul) ~ 7/10
A Mystery Solving Gang Divided (The Funky Phantom) ~ 7/10
Peebles' Pet Shop of Terrible Terrors! (Wanda Sykes) ~ 6/10
Elementary, My Dear Shaggy! (Sherlock Holmes) ~ 8/10
Ollie Ollie In-Come Free! (Ricky Gervais) ~ 5/10
The Scooby of a Thousand Faces! (Wonder Woman) ~ 8/10
The Cursed Cabinet of Professor Madds Markson! (Penn and Teller) ~ 7/10
When Urkel-Bots Go Bad! (Steve Urkel) ~ 6/10
The Fastest Fast Food Fiend! (Jim Gaffigan) ~ 5/10
Attack of the Weird Al-osaurus! (Weird Al Yankovic) ~ 7/10
Now You Sia, Now You Don't! (Sia) ~ 7/10
Quit Clowning! (Kenan Thompson) ~ 10/10
What a Night for a Dark Knight! (Batman) ~ 10/10
The Nightmare Ghost of Psychic U! (Whoopi Goldberg) ~ 10/10
The New York Underground! (Halsey) ~ 8/10
The Sword, the Fox and the Scooby-Doo! (Mark Hamill) ~ 8/10
One Minute Mysteries! (The Flash) ~ 8/10
Hollywood Knights! (George Takei) ~ 7/10
Fear of the Fire Beast! (Steve Buscemi) ~ 8/10
Too Many Dummies! (Jeff Dunham and Darci Lynne Farmer) ~ 9/10
Dance Matron of Mayhem! (Maddie Ziegler) ~ 10/10
The Wedding Witch of Wainsly Hall! (Jeff Foxworthy) ~ 8/10
A Run Cycle Through Time! (Malcolm McDowell) ~ 7/10
I Put a Hex on You! (The Hex Girls) ~ 9/10
The High School Wolfman's Musical Lament! (Christian Slater) ~ 9/10
Space Station Scooby! (Bill Nye and Neil deGrasse Tyson) ~ 8/10
This first season starts off so-so, but it does get stronger as it goes along, with some real 'gold standard' episodes (certainly better that The New Scooby-Doo Movies!).
Frank Welker (Fred/Scooby), Grey DeLisle (Daphne), Matthew Lillard (Shaggy), and Kate Micucci (Velma) all nail it. There are some great locations, and some top drawer writing.
Overall, 8/10