In the history of comedy, few subgenres have been so consistently dire as the caveman laffer. Yet it must be said that, of all the actors in Hollywood, perhaps none is better suited to top-line a new stab at the caveman comedy than Jack Black- although it must be said that Michael Shannon bears a certain resemblance to Eegah! star Richard Kiel. Black’s outsize personality lends itself nicely to the prehistoric setting, but the actor who makes Year One look at least a little promising isn’t Black but costar Michael Cera, who doesn’t exactly look to be stretching himself here (that’ll have to wait, I guess), but whose boyish reluctance ought to provide a nice contrast to Black. Come to think, I sort of wish director Harold Ramis could have made the rest of his characters more boorishly Cro-Magnon, rather than casting the story with bearded veterans of Mr. Show and the Judd Apatow touring company. Still, if it’s at least as good as Caveman- a guilty pleasure of mine- this’ll be better than most movies of the kind. Zug zug!