Recently, we were inspired by 'Parks and Recreation' to write a feature listing TV shows that overcame a rocky launch. Sadly, the reverse seems more common: shows that start strong but finish weak. Our latest inspiration is the ongoing death spiral of 'Heroes.' (This week: Mohinder does something stupid! People's powers go awry at inopportune moments! Adrian Pasdar, pictured, looks like he'd rather be anywhere else!) Here's a once-inspired show that seems to be going down in flames after having run out of ideas.
Other times, shows peter out because of casting changes, bad writing or bizarre creative decisions. In each case, however, the audience feels betrayed and often deserts the show, leading to ratings death and what-went-wrong autopsies. Here's what went wrong on nine other good shows gone bad.

Less than a month after 
Superheroes are so 2006; vampires are the hotness right now. Sandy Deane and Kelly Woo grill John Kubicek from BuddyTV about why he's still hanging on to lame duck 'Heroes,' then explains why he thinks 'The Vampire Diaries' is the most "daring" and "shocking" show on TV today. 
ABC:
British theater and television talent
The super-powered mutants on 