Here is a more updated query for the first one listed in this article

select er.session_id, blocking_session_id, wait_type

, wait_time, last_wait_type, database_id

, user_id, er.cpu_time, er.reads + er.writes AS Physical_IO, granted_query_memory

, es.login_time, es.last_request_start_time, es.host_name

, program_name, nt_domain, nt_user_name, login_name

from sys.dm_exec_requests ER

INNER JOIN sys.dm_exec_sessions ES

ON ER.session_id = ES.session_id

where blocking_session_id <> 0

or ER.session_id in (select blocking_session_id from sys.dm_exec_requests)

Thanks for the article.