Are there any good tools/processes that can be used to effectively monitor
the MTL usage of a SQL Server instance?

Sql Server 2005 - SMS "Modify Table option" times out when trying to 'alter' very large table
SQLExpress
Rename Cluster Instance - New Hardware - Keep Name
Moving the SQL 2005 System Tables
Microsoft doesnt really support anything over 32 Databases(??)
Database refresh
Slow performance
SQL Server CPU Spikes
Object search query???
linked server to Excel