Using SUM(CASE) and SQL Date Functions to compute YTD Totals

I needed to generate a report that had your typical YTD, MTD, Current Week, etc. data. This seemed like a perfect time for a SUM(CASE) statement:

SELECT     'Number of Vouchers Processed' AS Query,
  SUM(CASE WHEN Form$Status IN ('Completed', 'Rejected') AND
      End$Dt <= @EndDt AND End$Dt >= DATEADD(dd, -7, @EndDt)
      THEN 1 ELSE 0 END ) AS WeekCount,
  SUM(CASE WHEN Form$Status IN ('Completed', 'Rejected') AND
      Month(End$Dt) = Month(@EndDt)
      THEN 1 ELSE 0 END ) AS MonthCount,
  SUM(CASE WHEN Form$Status IN ('Completed', 'Rejected') AND
      Year(End$Dt) = Year(@EndDt)
      THEN 1 ELSE 0 END ) AS YearCount,
  SUM(CASE WHEN Form$Status IN ('Completed', 'Rejected')
      THEN 1 ELSE 0 END ) AS TotalCount
FROM bam_TV_Completed AS TRC