Getting running queries in SQL Server

Today I needed to get running queries in SQL server (you can kill them with the command KILL followed by the session id). After 'binging' it, got to the following query :). Need to study more about the metaschema in sql server.

SELECT session_id,
       request_id,
       Db_name(database_id),
       start_time,
       status,
       command,
       Substring(txt.TEXT, ( statement_start_offset / 2 ) + 1,
       ( ( CASE statement_end_offset
       WHEN -1 THEN Datalength(txt.TEXT)
       ELSE statement_end_offset
                                                                   END
           - statement_start_offset ) / 2 ) + 1) AS statement_text,
       wait_type,
       wait_time,
       blocking_session_id,
       percent_complete,
       cpu_time,
       reads,
       writes,
       logical_reads,
       row_count
FROM   sys.dm_exec_requests
       CROSS APPLY sys.Dm_exec_sql_text([sql_handle]) AS txt
WHERE  session_id <> @@SPID
       AND session_id > 50