Was too slow... but just for the fun of it :

SELECT OBJECT_NAME(C1.id) AS Obj FROM sys.syscomments C1 LEFT OUTER JOIN sys.syscomments c2 on C1.id = C2.id AND C1.Colid = C2.Colid - 1 where CONVERT(VARCHAR(MAX), C1.text) + CONVERT(VARCHAR(MAX),ISNULL(C2.Text, '')) like '%usp_SignOFF_Count%' ORDER BY Obj