Whatever happened to Jack Bauer, eh? (To be honest, we gave up on 24 halfway through series three. It was giving us a migraine.)

Anyway, he's back! Sort of! Kiefer Sutherland has reprised his Bauer persona in an advert for Acer's Aspire S5 Ultrabook, in which he indulges his passion for moist, fluffy cupcakes. Look - it'll all make sense when you watch it. But be warned: that backing track's given us another migraine.

Feel up to watching rather more cringeworthy celebrity adverts? Here you go:

Loading Slideshow...
  • Brad Pitt - Pringles

  • Tina Fey - Mutual Savings Bank

  • David Hasselhoff - Barclaycard

  • Mr T - Flavorwave Turbo

  • Bruce Willis - Seagrams wine coolers

  • Keanu Reeves - Kellogg's Corn Flakes

  • John Lydon - Country Life

  • Vernon Kay - Flora Cuisine

  • Sean Bean - Barbican

  • Tim Lovejoy - Giovanni Rana pasta

  • Keanu Reeves - Kellogg's

  • Matt LeBlanc - Heinz Ketchup

  • Peter Mandelson - The Times

  • Ben Affleck - Burger King

  • Muhammad Ali - Four Gone

  • Mikhail Gorbachev - Pizza Hut

  • Martin Kemp and Marco Pierre White - Bernard Matthews Farms

  • Sean Connery - Ito Ham

  • Gavin Henson - Brits Bingo

  • Louise & Jamie Redknapp - Thomas Cook

  • Morgan Freeman - Listerine

  • Jean-Claude Van Damme - Coors Light