So which track from the 00's is the most requested song / karaoke track at a gig?

For me, Valerie (Mark Ronson and Amy Whinehouse) has been pretty much requested at every gig, and several times during!
Karaoke wise, it's 'Is This The Way To Amarillo' (re-release!)

How about you?

killers - mr Brightside for the latter part of the noughties - i like it so why not

killers again - somebody told me

infact all killers - suprised me as i never liked them to start with.
Forced to listen to it so much has really grown on me.

BEP - I Got a feeling
D Guetta - Sexy chick

Rock DJ - Robbie Williams
Kylie - Can't get you out my head

Scissor Sisters - I don't feel like dancing