How do you sum up the sprawling but concisely plotted X-Men: First Class in one sentence? You could do it like Damon Lindelof, who poked fun at January Jones on Twitter: “Emma Frost’s THREE mutant powers: Telepathy, Transformation to Solid Diamond and last but not least, Sucking at Acting.†Or, you could take a cue from Brett Ratner, who slyly tweeted a link to box-office figures that show his X-Men: The Last Stand still standing tall at the top of the superhero heap. But we figure you’ll have other things to say about this promising prequel, so get to sayin’ em, and keep it to only one sentence.