I have never of it and I can't find any info on it at TV.com. Is it another MASH spin-off?

M*U*S*H is a Cracked Magazine name for M*A*S*H.

M*U*S*H was a bad 70s cartoon that made all the Mashers into talking dogs in a military outpost at the North pole

http://www.finest-kind.net/miscellaneous/mush.php

here is the IMDB page on MUSH http://imdb.com/title/tt0220626/

There used to be a children's show called "Uncle Croc's Block" on Saturady mornings from September 1975 to February 1976 . Charles Nelson Reilly played Uncle Croc, a children's show host who showed a series of cartoons . Uncle Croc didn't like his job, but showed the cartoons anyway . His sidekick was Mr . Rabbit Ears ( Alfie Wise ) and his director was Basil Bitterbottom ( Jonathan Harris, "Lost in Space" ) .

The cartoons were "Fraidy Cat", "Wacky and Packy" and "M*U*S*H" . The characters on "M*U*S*H" were Bullseye, Tricky John, Sonar, Major Sideburns, Coldlips, and Colonel Flake . Other characters on the "M*U*S*H" segments were Hilda, Lupey, and General Upheavel . To my memory, the "M*U*S*H" segments were rather good . "M*U*S*H" had a "cool" factor because it was based on an adult show .