Convert Arbitrary Table to Array?

Hi, I need a function that accepts a table name and returns a 2-dimensional array of the table data.

I found some related posts on this and other forums and tried several approaches with plpgsql but have had no success.

I know I can pull the table data out to the application tier and transform it from there but I would really prefer to keep it in the database.

Any help is greatly appreciated.

Thanks-

Lee