I think the problem with Graveyard Cars is they essentially just restore B and E bodies back to stock specs. The show has been on for a long time and there's only so many B and E body combinations you can do. It got repetitive years ago, even without Mark's antics. They had a few different builds and some customizations but 95% of the show was the same thing over and over again. It's no surprise that it jumped the shark a few years in with all the goofiness.
Either way with the Motortrend cancellations, nearly all of our car shows are going by the wayside. Sucks because I really enjoyed a few of them.