Episode one sees Michael McIntyre, The One Show, Cheryl Cole and Simon Cowell, Ricky Gervais, Davina McCall, Claudia Winkleman, Kylie and Dannii Minogue all coming in for the Culshaw and Stephenson treatment. Among many sketches, Culshaw shows viewers that Ross Kemp as not quite the hard man he'd have them believe, and Stephenson does a brilliantly acerbic Anne Robinson.

Viewers see a snapshot of Wayne and Colleen Rooney's home life; witness Gordon Brown rapping; and learn the tragic story behind Simon Cowell in Episode 2. Also: Ross Kemp infiltrates another notorious gang; Kylie and Dannii watch as their lesser-known sister, Daggy, hatches a plot to become famous; and DCI Gene Hunt crashes the Midsomer Murders. It seems that Gok Wan may not be all he appears and it looks like Eamonn Holmes is up to his old tricks again.

The myriad characters this week include Tess Daly and Vernon Kay, who pick up an unexpected holiday hitch-hiker; Jonathan Ross, who delivers a great speech; and Fiona Bruce, who is up to her old tricks again on Antiques Roadshow. Nick Knowles also makes an appearance at the local hardware store and Lorraine Kelly debuts in "Bad Jobs For Celebrities". The Top Gear cast are put through their paces and Gok Wan, Boris Johnson, Amanda Holden, Amy Winehouse and Cheryl Cole all come in for a good ribbing in this fast-moving sketch show.

Amy Winehouse auditions for Doctor Who; Michael McIntyre makes his debut in Bad Jobs For Celebrities; and Tess Daly and Vernon Kay try to continue their holiday with an unwanted third party. Culshaw and Stephenson also turn their attentions to Davina McCall, Dominic Littlewood, Paris Hilton and Jonathan Ross. And DC Gene Hunt crashes an episode of Poirot. Meanwhile, with the impressionists' assistance, Simon Cowell reads an unlikely bedtime story.

This week, the impressions include Gordon Ramsay's debut on CBeebies; Kate Winslet appearing in the Bad Jobs For Celebrities slot; and Kirstie and Phil from Location, Location, Location getting themselves into a bit of a pickle. There's also Davina McCall and Claudia Winkleman having yet another dilemma; a showdown between Simon Cowell and Anne Robinson; Ant and Dec trying to find their way in the jungle; and Hollywood stars Brad Pitt and Angelina Jolie are also parodied.

There's an audience with the Minogues, what's inside Simon Cowell's Warehouse, DCI Gene Hunt meets Robin Hood, and John Barrowman debuts in Bad Jobs For Celebrities. There's also Paris Hilton, The One Show, Top Gear and Ray Mears, plus Eamonn Holmes wreaks havoc on the Chelsea Flower Show.

A compilation of the best of the series, showing nobody is safe while Culshaw and Stephenson are taking the mickey out of celebrity culture. Eamonn Holmes, Bruce Forsyth, Tess Daly and Vernon Kay get a ribbing, as do Ross Kemp, Amy Winehouse, Michael McIntyre and David Cameron. Autumnwatch, Cheryl Cole, Wayne Rooney and The Apprentice also come in for the typically ludicrous Culshaw and Stephenson treatment.

A look back over series highlights sees Culshaw and Stephenson doing what they do best: brilliant celebrity impressions. Series favourites Claudia Winkleman and Davina McCall, Michael McIntyre, Simon Cowell, Ricky Gervais, the Minogue Sisters, Brian Blessed, Lorraine Kelly, Gene Hunt and Amanda Holden all come in for one final drubbing.