LONDON, England (CNN) -- They are some of the biggest names in Hollywood, but even Susan Sarandon, Ethan Hawke and Dustin Hoffman have had their fair share of casting calamities they would rather forget.



Mike Myers sabotaged some auditions for parts he didn't want. "Why not be nude even if it is a children's theatre?"



CNN's The Screening Room has managed to persuade the cream of Hollywood to confess their tales of audition woe.



The stars shudder at the memory of waiting in line, frantically trying to memorize lines handed to them moments before, all the while being assessed by critical strangers.



Benicio del Toro recounts attending 50 or 60 auditions before getting a part and Quentin Tarantino told Eli Roth he "blew it" when he first auditioned for "Inglourious Basterds." While Catherine Keener remembers a cutting personal assessment: "You're not pretty enough."



Here are some of their worst moments:



Bill Nighy "Pirates of the Caribbean: Dead Man's Chest." "Love Actually"



"There was one that started out terrible, which was where I had to go to a disused tax office in Harrow [near London, England] very early in the morning and put on very tight velvet flared loon pants and a pair of crocodile four-inch- heeled platform shoes, and wear a sort of very small top that didn't meet my trousers, hair extensions and I had to karaoke to 'Smoke on the Water' by Deep Purple. It's a very lonely place. And I was 45 at the time..."



Ethan Hawke "Before Sunset," "Before the Devil Knows You're Dead"



"I have had so many bad auditions. I have fallen on my ass. I have made a complete fool of myself. I auditioned for Robert Redford once and I was so starstruck I couldn't even speak. I had a mic wire at a screen test clipped to me and then I got kind of nervous and I paced in a circle and then took a step and tripped and fell on my face. You just have to forgive yourself and keep going on."



Mike Myers "Austin Powers: The Spy Who Shagged Me," "Shrek"



"I've had some bad auditions for some TV movies that were shooting in England where I just didn't want to be in them and offered them more obtuse [performances] ... I like to think of it as performance art. I didn't sabotage it, I was just woefully inappropriate, you know? I just thought, 'Why not be nude even if it is a children's theatre?"



Catherine Keener "Being John Malkovich," "Synecdoche, New York"



"You wouldn't believe some of the comments, assessments. But, they're really not meant personally. Like for example, 'You're not pretty enough.' For them it's just a fact. But for you it's like, 'Oh my God! I have to live with this.' You get a thicker skin about it, which you should because it isn't meant personally, but it's such a personal profession that you kind of have to get used to getting critiqued on things that you shouldn't even care about."



Dustin Hoffman "Marathon Man," "Meet the Fockers"



"The most famous casting director from New York, I was lucky enough to get an audition with her in the '60s. She did all the plays, all the Broadway plays. She is sitting across the desk saying her lines, and I am saying mine, and she stops and says, 'Come here. Bring your chair here, right next to me.' And I say, 'Why?' And she says, 'Because I can't hear you, and you have never been on the stage or on Broadway, and you are going to have to reach the last row.'



I said, 'Yeah, I know. I have been studying acting for about seven years now, but I'm not on Broadway now, I
What did Eli Roth audition for? Who confessed to falling on his ass? who is confessing Who screamed at a casting agent? What did Ethan Hawke confess to? Who "blew it" when he first auditioned for "Inglourious Basterds"? Who did Dustin Hoffman scream at? who screamed at a casting call who fell on their casting
"Inglourious Basterds." Ethan Hawke cream of Hollywood Dustin Hoffman I had a mic wire at a screen test clipped Eli Roth "The most famous casting director from New York, Dustin Hoffman Ethan Hawke
question: What did Eli Roth audition for?, answer: "Inglourious Basterds." | question: Who confessed to falling on his ass?, answer: Ethan Hawke | question: who is confessing, answer: cream of Hollywood | question: Who screamed at a casting agent?, answer: Dustin Hoffman | question: What did Ethan Hawke confess to?, answer: I had a mic wire at a screen test clipped | question: Who "blew it" when he first auditioned for "Inglourious Basterds"?, answer: Eli Roth | question: Who did Dustin Hoffman scream at?, answer: "The most famous casting director from New York, | question: who screamed at a casting call, answer: Dustin Hoffman | question: who fell on their casting, answer: Ethan Hawke