Generally speaking, actors don't tend to speak ill of their own movies, at least not while they're promoting them.
But when enough time has passed and the world has moved on, they might feel inclined to drop the pretenses and give their honest-to-God verdict on their own work.
We've heard countless actors over the years confess that their worst roles were shameless cash-grabs because they had mortages to pay off, and every so often they might even single one movie out of their biggest franchise as the one they really don't like.
These 10 actors, from comedy legends to bonafide action stars, all opened up with blunt honesty about the one movie in their most iconic and profitable movie series that they just can't stand.
Whether a result of their own stodgy performance, the general cynicism of the project, rampant production issues, or their later admission that they simply made it for the money, these actors all have a bone to pick with this entry above all others.
It's easy to respect their candour, even if it also makes it painfully clear you should never, ever trust actors when they promise audiences that the new sequel in their hit franchise is just so damn good. They are actors, after all...
10. Daniel Radcliffe - Harry Potter & The Half-Blood Prince
You really can't blame former child actors for looking back upon some of their earlier movies and wincing a little bit, though at least in the case of Daniel Radcliffe he was the star of one of the most successful Hollywood franchises of all time - Harry Potter.
While all eight movies in the series were critical and commercial successes, Radcliffe hates one film in the series in particular.
Surprisingly enough though, it's not the first or second movie where he was still finding his footing playing Harry, but the sixth, Harry Potter and the Half-Blood Prince. Radcliffe hates the film for one particular reason - his own performance. He said:
"It's hard to watch a film like Harry Potter And The Half-Blood Prince, because I'm just not very good in it. I hate it. My acting is very one-note and I can see I got complacent and what I was trying to do just didn't come across."
Despite Radcliffe's misgivings, Half-Blood Prince was ultimately one of the better-reviewed films in the series, and grossed a stonking $934 million worldwide.