T-SQL (SS2K8) :: Current Year Begin And End Dates

I am working on some payroll related code which currently has the following hard-coded CASE statement (I won't include the entire thing, it is lengthy):

AND b.TCDateTime BETWEEN '2013-01-01 0:00' and '2013-12-31 23:59'

I want to get rid of the hard coding, and have this use current year dates. So for 2014, it should reference rows where the TCDateTime is >='2014-01-01 0:00' AND <'2015-01-01 0:00'..I think the following would accomplish this, but would like confirmation that this is the 'best' way (and that it will work!)

SELECT CONVERT(DATETIME, CONVERT(CHAR(4), DATEPART(yyyy, GETDATE())) + '0101') AS curryrbegin
--output should be yyyy-01-01 00:00:00.0 where yyyy is current year
SELECT CONVERT(DATETIME, CONVERT(CHAR(4), DATEPART(yyyy + 1, GETDATE()))
+ '0101') AS nextyrbegin
--output s/b nextyear-01-01-00:00:00.0

Then, change the CASE statement to read:

AND (b.TCDateTime >= curryrbegin AND < nextyrbegin)