Greg comes live from under the Radio 1 Christmas tree with classic tracks, mince pies and presents for all. Well, sort of.
Radio 1's Tinsel Takeover gets underway with our first four listeners - Andrew Frenzel, Kimberley Boak, James Briers and Libby Ainsworth. What happens next is down to them.
The Radio 1 listeners have taken over for the day - this hour it's the turn of Neil Phipps, Ross McMahon, Dan Carnelly and Christina Tatlow to do what they want for 15 minutes!
Glenn Atkins, Tom Errington, Michelle Miller and Jude Churcher are the next four listeners to get 15 minutes of Radio 1 each to play with as part of the Tinsel Takeover.
Radio 1's Tinsel Takeover continues with Craig Sharp, Richard Good, Jamie Clews and Polly Farrington. Anything could happen.
The next four Radio 1 listeners step up to the mic as part of the Tinsel Takeover - Will Wade, Robin Morgan, Cath Bore and Matthew Dunleavy are your hosts for this hour.
Radio 1's Tinsel Takeover concludes with Dr Shahir Shamsuddin, Suzie Owens, David Elton and George Couper each doing what they want for 15 minutes.
Big Brother, Kylie's hotpants and Eminem. It must be the year 2000. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
2001 brought us the iPod, Harry Potter on the big screen and the attack on New York. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
2002 - we were all watching The Office, reality TV and Ali G. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
It's 2003, the year of the White Stripes, grime and the launch of MySpace. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
The year of the chav, Goldie Lookin' Chain and zombie rom-com Shaun of the Dead. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
Dr Who was back after 16 years and the UK went mad for Arctic Monkeys. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
It's 2006 - Nu Rave arrived and Ibiza rocked, but the boys in skinny jeans started to lose the fight as Lily Allen led the girls back into the charts.
Remember 2007? It was all about downloads, rehab and The Mighty Boosh. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
2008 - Jay-Z headlines Glastonbury and Barack Obama is elected US president. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial.
The story concludes with a look at 2009. This episode is available until 9pm on 28th December as part of the Series Catch-up Trial. Part of the BBC Christmas 2009 season.
Calvin Harris and Pete Tong recorded live at the Warehouse Project in Manchester.
