Set time to zero in a datetime value

If you have a datetime value that displays in the following format : 2012-11-27 14:53:15.4430000
and you would like it to be displayed this way (time set to "0"): 2012-11-27 00:00:00.0000000

Tip : 

declare @myDate datetime2
select @mydate = DATEADD(DD, 0, DATEDIFF(DD, 0, GETDATE()))

;)