SUPERTRAIN! One of the all-time most infamous flops. 1979, NBC; only lasted nine episodes!
An awful cartoon:
STUNT DAWGS (1992-92)
Awful, obnoxious cartoon involving stunt vehicles driven by both heroes and villains.
One of the more botched comics-to-cartoon adaptations (mostly due to the bad voice acting):
AVENGERS: UNITED THEY STAND (1999-2000)
As a bonus:
NBC did a spoof of their "Proud as a peacock" campaign when their ratings were awful in the early 80s under Fred Silverman.
We're loud! Uh huh, say it again, NBC
We're loud! We're in last place
Loud! We're gonna fall right on our face
Loud! Since Freddy came our ratings always stayed the same
An 18 rating, a 14 share
Bet you wonder if we care
No! We're just proud to be, NBC
We're loud! We're living in the past
Loud! The bottom's dropping out we're
Proud! Of our 40 shows, just watch our shares go up your nose
We don't care, it's all there
NBC is always there, we're not just proud to be, we're also loud
We're loud! We're louder than the rest
So loud! It doesn't matter, we're not the best
Loud! We're gonna screw around and run this network in the ground
The peacock's dead so thank you Fred
Yeah, thanks a whole lot
NBC, proud as a peacock!