DIDDLE-IDDLE-DEE! CONTAINS SPOILERS
Mediocre high-concept nonsense wherein nostril-wiggling witch Nicole Kidman decides to try and live like a real non-magical human by moving to Los Angeles and taking the lead role in a reboot of TV sitcom Bewitched (wherein a witch decides to try and live like a real non-magical human). The resultant mess of self-referential in-jokery and the collision of fantasy, fake reality, meta-reality and "real" reality (in which one of the other characters on the show is also played by a witch, and another previously unseen character turns up in the "real" world) would cause the Tardis to crash into the middle of the Sun in confused bafflement, and it has to be said that Bewitched's makers do not pull it off.
Already multi-layered matters are complicated further when she gets involved with her co-star, a thundering halfwit played by Will Ferrell who wants all the glory of the new show for himself; the trouble is that viewers only like the show for her and not for him. Meanwhile Michael Caine is probably the best thing on show, materialising every so often as Kidman's witchy dad to lech around young women, and Shirley MacLaine is another witchy actress playing a TV witch.
It's not any good at all, and Will Ferrell in particular is as thoroughly charmless as he ever is, but the film is occasionally amusing enough to more or less just about scrape under the wire. The TV studio background is interesting, though the sitcom they're all making looks terrible and the Kidman-Ferrell romance simply doesn't work. But at the very least it's never terrible enough to be actively annoying. Instead it's just something inconsequential, burbling merrily away to itself but never capturing your complete attention. Hardly worth the effort.