mySQL now supports Stored Procedures. This is more for me than anything else. Just came across the fact that mySQL 5.0 now supports stored procedures. (Finally!) It follows the syntax for SQL:2003, but there are plans to consider PL/SQL and T-SQL in the future.
Documentation can be found here. Perfect timing, as I am just preparing to work on a project that will need that. [Dana Epp's ramblings at the Sanctuary]