How can you tell what Tables are taking up the most space in a SQL Server 2005 Database?

Question

How can you tell what Tables are taking up the most space in a SQL Server 2005 Database?

I am sure there is some System Stored Procedure that shows this information.<

Answer 1

Rossisdead's comment answered this question the best for me, I wish it wasn't buried in a comment. This will be useful for people like me not trying to script the solution (the OP did not ask for a code snippet)

If you're using Management Studio you can also right click on the database and go to Reports -> Disk Usage by Table for the same results