The Brit awards at 30 - The best and worst performances

2000: Geri Halliwell performs Bag It Up. It is astonishing that this woman ever had a musical career, let alone one that would let organisers deem her worthy of a performance slot. Thumbs down Photograph: Fiona Hanson/PA Photograph: Fiona Hanson/guardian.co.uk 2003: Justin Timberlake performs a medley of his own hits before being joined by the delightful Kylie Minogue for a cover version of Blondie's Rapture. JT actually beatboxed halfway through but we'll put that to one side and give this a thumbs up Photograph: Toby Melville/Reuters Photograph: Toby Melville/guardian.co.uk 2002: Ali G and Shaggy perform Booyakasha. This is clearly a thumbs down Photograph: Dave Benett/Getty Images Photograph: Dave Benett/guardian.co.uk 2007: Amy Winehouse performs the brilliant Rehab, but does so quite badly. Thumbs down Photograph: Dave Hogan/Getty Images Photograph: Dave Hogan/guardian.co.uk 2008: Rihanna performs with the Klaxons for a special version of Umbrella. Reaction was mixed, but we're opting for a thumbs up for lazerability alone Photograph: Dave M. Benett/Getty Images Photograph: Dave M. Benett/guardian.co.uk 2009: Girls Aloud's The Promise was unexpectedly good, especially when compared with U2's monstrosity that was Get On Your Boots. Thumbs aloft Photograph: Dave Hogan/Getty Images Photograph: Dave Hogan/guardian.co.uk 2009: Just when you think they can't get any more kitsch, Neil Tennant and Chris Lowe of Pet Shop Boys perform with Brandon Flowers and Lady Gaga for a good old medley. Thumbs up Photograph: Dave M Benett/Getty Images Photograph: Dave M Benett/guardian.co.uk 2001: Gold! Destiny's Child bring flames and a touch of glamour to proceedings with their performance of Independent Women. Thumbs up Photograph: Rex Features/Richard Young Photograph: Rex Features/guardian.co.uk Billie (far left) and Tina Cousins (far right) join the B*Witched, Steps and Cleopatra (front, seated) to perform an Abba medley. We can only apologise to those of you who had wiped this from your memory. Thumbs most definitely down Photograph: Fiona Hanson/PA Archie/Press Association Photograph: Fiona Hanson/guardian.co.uk