10 things not to do with SQL Server
The recording of my session from SQLBits last year has now been fixed so you can watch the whole thing.
You can watch or download the recording from here
http://www.sqlbits.com/Sessions/Event7/10_things_you_should_never_do_with_SQL_Server
Things I cover are indexing, truncating the transaction log, reindexing, shrinking databases and more.