What TV Shows aren't as good as they used to?

What TV Shows aren't as good as they used to?
I know some of them:
Heroes
Prison Break
The simpsons

The Simpsons !!

some are really bad to watch like Breaking bad and Reba...

Two and a half men, for sure.

Glee, Revenge, Vampire Diaries

Southpark comes to mind, it's been on the air for way too long. The jokes are starting to get stale, and I really hope it doesn't end up like the Simpsons that was on the air for way too many years. :\

Community.

Community...!!!!

Two and a half men, for sure.