Director James Gunn's Guardians Of The Galaxy is a big gamble for Marvel Studios. It's an unknown quantity even to most comic fans. It's a space opera at a time when non-Lucasfilm space operas don't perform well. It's a movie with a talking raccoon at a time when even Disney princess movies don't have talking animals.
Of course, all of Marvel's movies have been gambles. Iron Man wasn't a household name, despite how we think of the character now. Thor was a sci fi fantasy movie -- what could be worse? Captain America seemed an impossible sell for overseas markets. Bringing those franchises together for Avengers? Insanity. Marvel Studios' safest bet was probably Hulk -- a household name and a proven quantity -- and that's been the studio's weakest performer. So it looks like the big gambles are where Marvel excels. If Guardians Of The Galaxy is the studio's biggest gamble to date, it makes a weird kind of sense that it's also one of the studio's most delightful successes.