Song title unknown

[gazza_954]

Would anyone please be able to tell me the title to a song.

At the start to it, a man say "thankyou thankyou" its sorta a r'n'b song, and the main line in it is "what the hell are you waiting for" which is sung my women mostly and in a slight preachy sorta tone.

any info would be great thanks!

[robbieh]

jay z - encore