I haven't seen it myself, but my 2 buddies who viewed the pre-screening have both said this is good. I plan on seeing this on the weekend or the next, so I personally can't comment to then. Both of my friends commented that Dwayne Johnson is good in his role as Hercules. Along with Fast Five and Fast & Furious 6, it looks like the O'l Rock is on a roll these days....oops, sorry for the bad pun.
I have a soft spot for mythology-themed films and stories, so I'm thinking I'm going to enjoy this.