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backupset 
backupfile 
backupfilegroup (SQL Server 2005 upwards)
backupmediaset 
backupmediafamily 
restorehistory 
restorefile 
restorefilegroup 
logmarkhistory 
suspect_pages (SQL Server 2005 upwards) 
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SELECT b.name, a.type, MAX(a.backup_finish_date) lastbackup
from msdb..backupset a
INNER JOIN master..sysdatabases b ON a.database_name COLLATE DATABASE_DEFAULT = b.name COLLATE DATABASE_DEFAULT
GROUP BY b.name, a.type
ORDER BY b.name, a.type
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SELECT TOP 20 b.physical_device_name, a.backup_start_date, a.first_lsn, a.user_name from msdb..backupset a
INNER JOIN msdb..backupmediafamily b ON a.media_set_id = b.media_set_id
WHERE a.type = 'L'
ORDER BY a.backup_finish_date DESC
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SELECT b.physical_device_name, a.backup_set_id, b.family_sequence_number, a.position, a.backup_start_date, a.backup_finish_date
from msdb..backupset a
INNER JOIN msdb..backupmediafamily b ON a.media_set_id = b.media_set_id
WHERE a.database_name = 'AdventureWorks'
AND a.type = 'L'
AND a.backup_start_date > '10-Jan-2007'
AND a.backup_finish_date < '16-Jan-2009 3:30'
ORDER BY a.backup_start_date, b.family_sequence_number
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EXEC msdb..sp_delete_backuphistory '1-Jan-2005'
EXEC msdb..sp_delete_database_backuphistory 'AdventureWorks'
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