Tinchy Stryder does Rihanna karaoke (very Badly)

H.U.N.G.R.Y Family - Egg Soldiers Beans & Toast

Vernon's food experiment

Greg James does Coldplay

Ida Maria and Reggie Yates do ABBA Karaoke

Chappers does Shaggy

Reggie does Nickelback

Scott doing Winehouse

Fearne on the Foo Fighter's Stage at Wembley

Fearne does Vampire Weekend

Reggie Yates does Chris Brown

Grimmy Fails Annie's Challenge

James Corden's Role Model

Scouting for Girls take the Grapest Ever Challenge

Alphabeat do the Grapest Ever Challenge

Radio 1 presents Grimmy eating Mark Ronson's fingernail

Radio 1 Switch makes karaoke cool again!

The Grapest Challenge Ever - Saftey Video

Perez Hilton does the Grapest Challenge Ever on BBC Radio 1

Radio 1 Hoosiers' Advice on The Surgery

Radio 1 presents Grimmy and Mac swinging- at the circus

Radio 1 Switch presents Annie Mac and Grimmy join the circus

Simple Plan Take Switch's Grapest Challenge Ever

Reggie Yates Advice - The Surgery BBC Radio 1

Radio 1 presents Panic At The Disco on Switch

Fearne Cotton's Advice on The Surgery

Switch presents The Hoosiers run wild in Radio 1

Radio 1's Tim Westwood gives his New Year's advice

Radio 1 challenges Robyn to a Tetris contest

Pappys Fun Club Christmas Comedy Sketch 3 - BBC Switch with Annie Mac on BBC Radio 1