Performence Issues :Get Worst Performing T-SQL statement

While doing some performence issues in SQL 2005 I came across with this particular Artical ..
http://www.databasejournal.com/features/mssql/article.php/3802936/Finding-the-Worst-Performing-T-SQL-Statements-on-an-Instance.htm

this really helps if u want to know what all the T-SQL statement are worst performer
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Enjoy reading