The nominees for this year's Foster's Edinburgh Comedy Awards have been unveiled.
The shorlisted acts include 20-year-old internet sensation Bo Burnham and Greg Davies from TV show The Inbetweeners.
Josie Long, Sarah Millican and Russell Kane are also nominated for the award, now in its 30th year. The winner will be announced on Saturday.
Previous winners include Lee Evans, Steve Coogan, Al Murray, Frank Skinner and Sean Hughes.
The awards have been the launch pad for a string of new comedy stars since 1981.
"Star" names, who have already had a TV series or can perform in a 500-seat venue under their own name, are not eligible for the award.
US comic Bo Burnham, who was a teenager when he arrived in Edinburgh earlier this month, performs comedy songs on Youtube which have been watched by millions.
But he is making his Fringe debut.
Forty-year-old comic actor Greg Davies, who plays psychotic head of sixth form Mr Gilbert in The Inbetweeners and was a member of sketch troupe We are Klang, is also making his solo Fringe debut.
Geordie comedian Sarah Millican and Londoner Josie Long are both previous winners of Edinburgh's best newcomer award.
Russell Kane was nominated for the best newcomer award in 2006 and has been in the running for the top Edinburgh comedy prize in the previous two years.
Long describes her show Be Honourable as aiming to provoke people into changing the world.
Millican's show Chatterbox celebrates her inability to keep quiet.
The nominations for Best Comedy Show, which has a £10,000 prize, are:
· Bo Burnham: Words, Words, Words
· Greg Davies: Firing Cheeseballs at a Dog
· Josie Long: Be Honourable!
· Russell Kane: Smokescreens and Castles
· Sarah Millican: Chatterbox
The nominations for Best Newcomer are:
· An Audience with Imran Yusuf
· Asher Treleaven: Secret Door
· Gareth Richards: Stand Up Between Songs
· Late Night Gimp Fight!
· Roisin Conaty: Hero, Warrior, Fireman, Liar
· The Boy With The Tape on His Face
Nica Burns, producer of the Edinburgh Comedy Awards said: "Two fantastic 30th anniversary shortlists which reflect the enormous changes in the comedy landscape.
"For the first time two first-class female comics, Josie Long and Sarah Millican, both Best Newcomer winners, join 20-year-old Bo Burnham in an outstanding Edinburgh debut, Greg Davies from We Are Klang in his first solo show and Russell Kane winning his third consecutive nomination.
"It took a very impassioned, intense debate to select the nominees from an extremely strong and diverse long list.
"2010 will be remembered as a vintage year for comedy."