The costume is slimming, of course.
but read about the cast (from the wiki page on the film -
http://en.wikipedia.org/wiki/Watchmen_(film)) and see if that doesn't change your mind a bit.
" * Jackie Earle Haley as Walter Kovacs / Rorschach: A superhero who continues his vigilante activities after they are outlawed.<4> Unlike the other five principal actors, Haley had read the comic and was keen to pursue the role when he heard he had become a favorite candidate among fans.<5> He and fourteen friends put together his audition, where he performed scenes from the comic.<6> Haley "almost went nuts" trying to reconcile his understanding of complex human behavior with Rorschach's moral absolutism, stating the character made him wonder if people generally just make excuses for their bad actions.<7> Rorschach wears a mask with ink blots that morph to reflect his emotions: motion capture markers were put on the contours of Haley's blank mask, for animators to create his ever-changing expressions.<8> Haley found the mask "incredibly motivating for the character" because of its confining design, which heated up quickly.<9> Small holes were made in the mask for him to see.<8> Haley has a black belt in Kenpō, but described Rorshach's attack patterns as sloppier and more aggressive due to the character's boxing background.<10>
* Patrick Wilson as Daniel Dreiberg / Nite Owl II: A retired superhero with technological experience.<4> John Cusack, a fan of the comic book, expressed interest in the role.<11> Snyder cast Wilson after watching 2006's Little Children, which co-starred Haley. Wilson put on 25lbs to play the overweight Dreiberg.<5> He compared Dreiberg to a soldier who returns from war who is unable to fit in with society again.<12> Wilson said the fight style he was instructed to give Nite Owl was "heavy handed and power coordinated".<10>
* Malin Akerman as Laurie Juspeczyk / Silk Spectre II: A retired superheroine. Akerman described her character as the psychology and the emotion of the film due to being the only woman among the men. The actress worked out and trained to fight for her portrayal of the crimefighter.<13> Akerman's latex costume and wig, which often stuck into the latex, did not permit a lot of protection when performing stunts, and she often bruised herself during filming.<10> Ackerman pronounced Juspeczyk as "Juice-peck-it".<14>
* Billy Crudup as Dr. Jon Osterman / Doctor Manhattan:<15> A superhero with genuine powers who works for the U.S. government. The role was once pursued by actor Keanu Reeves,<16> but the actor abandoned his pursuit when the studio held up the project over budget concerns.<4> As well as playing Osterman in flashback as a human, for his post-accident scenes as Dr. Manhattan, Crudup is replaced in the film with a motion-capture CG version of himself. During filming on set, Crudup acted opposite his co-stars, wearing a white suit covered in blue LEDs, so he would give off an otherworldly glow in real life, just as the computer-generated Manhattan does in the movie. Crudup had to keep thinking of the character in the comic, because he felt ridiculous in the suit.<6> Crudup deemed it fortunate he did not have to wear prosthetics or fit into a rubber costume like the other actors though, and would remind them of this when they made jokes about his appearance.<5> Snyder chose not to electronically alter Crudup's voice for Manhattan, explaining the character "would try and put everyone as much at ease as he could, instead of having a robotic voice that I think would feel off-putting".<17>
* Matthew Goode as Adrian Veidt / Ozymandias: A retired superhero who has since made his identity public. The role of Ozymandias was originally connected to actors Jude Law and Tom Cruise (who Snyder felt would have been better as Manhattan),<16><10> but they left the project behind due to the studio's delay in handling the budget.<4> Snyder said Goode was "big and tall and lean", which aided in bringing "this beautiful ageless, Aryan superman" feel to the character.<5> Goode interpreted Veidt's backstory to portray him with a German accent in private and an American one in public; Goode explained Veidt gave up his family's wealth and travelled the world, becoming a self-made man because he was ashamed of his parents' Nazi past, which in turn highlighted the themes of the American Dream and the character's duality.<18> Because of the German-born depiction of Veidt, Goode pronounced his surname as "Vight".<19>
* Jeffrey Dean Morgan as Edward Blake / The Comedian: A superhero who is commissioned by the U.S. government. Prior to Morgan's casting, producers Lawrence Gordon and Lloyd Levin met with Ron Perlman to discuss portraying the Comedian.<20> When reading the comic for the part, Morgan stopped when he saw his character was killed off three pages in. When telling his agent he did not want the part, he was told to continue reading it and find out how important his character was.<5> Morgan found the role a challenge, explaining, "For some reason, in reading the novel, you don't hate this guy even though he does things that are unmentionable. <...> My job is to kind of make that translate, so as a viewer you end up not making excuses to like him, but you don't hate him like you should for doing the things that he does."<21> Morgan asked Snyder if the Comedian could swear more in the script.<10>
* Stephen McHattie as Hollis Mason / Nite Owl: The first vigilante to take up the mantle of Nite Owl.<2>
* Carla Gugino as Sally Jupiter / Silk Spectre: A retired superheroine, mother of Laurie Juspeczyk and the first Silk Spectre. Gugino's character ages from 25 years old in the 1940s to 67 years old in the 1980s, and the 37-year-old actress wore prosthetics to reflect the aging process. Gugino described her character's superhero outfit as an influence of Bettie Page-meets-Alberto Vargas. The actress donned the trademark hairdo of the character, though it was shaped to be more plausible for the film.<22> She also posed for the Alberto Vargas-style pin-ups of her character and a painting meant to be done by Norman Rockwell, which she enjoyed because she was fascinated by Vargas.<23>
* Matt Frewer as Edgar Jacobi / Moloch the Mystic: An elderly rehabilitated criminal, known when he was younger as an underworld kingpin and magician.<24>
* Niall Matter as Byron Lewis / Mothman: He is not a main focus of the storyline, but appears in flashbacks, at one point reduced in his later years to fragile sanity, unnerving the second Silk Spectre. He is regarded fondly by most of the Minutemen, and the first Nite Owl sends the second to visit him, uncostumed, on his behalf.<25>
* Dan Payne as Dollar Bill: A first-generation crimefighter who caught his cape in a revolving door during a bank robbery and was shot to death. Payne is a fan of the comic and shot his scenes over four days, both for his cameo in the theatrical cut and the fictionalized DVD documentary.<26>
* Danny Woodburn as "The Big Figure": A dwarf crime boss whom Rorschach put in prison.<27>"