Joseph Gordon-Levitt and Bruce Willis in LooperLOOPER

Rian Johnson's Looper, a time-travel thriller set primarily in the year 2044, casts Joseph Gordon-Levitt as a contract killer whose life is upended with the arrival of his latest target: his older self, who has been transported from the year 2074 and is played by Bruce Willis. This means that, with Gordon-Levitt delivering rather uncanny likenesses of his co-star's traditional scowls and smirks - and with the younger actor's countenance bizarrely altered to resemble the elder actor's familiar face - Willis essentially plays both leading roles ... which isn't the most enticing of setups if, like me, you generally find one Bruce Willis more than enough.

MegamindMEGAMIND

Since Universal Pictures' fizzy, funny animated hit Despicable Me was released a mere four months ago, it's hardly possible that DreamWorks' new Megamind could be considered an intentional ripoff, despite a plot that also finds an über-villain gradually morphing into an über-hero. And despite the film's haughty, antagonistic protagonist performing his evil deeds alongside a goofy, tag-along minion. And despite this blobby little homunculus being named Minion. (Seriously, are there no fresh ideas in Hollywood?)