PG Unpivot ?

I think they call this "unpivot" in MSSQL ?

How can I get an sql query to return  one line per column with... an ID, column name and value.  the ctid for the id field is fine.  

Example:

dvdb=# create table unpivot (intcol integer, floatcol float, strcol varchar);
CREATE TABLE
dvdb=# insert into unpivot (intcol,floatcol,strcol) values (1,1.1,'one'),(2,2.2,'two'),(3,3.3,'three');
INSERT 0 3
dvdb=# select * from unpivot;
 intcol | floatcol | strcol
--------+----------+--------
      1 |      1.1 | one
      2 |      2.2 | two
      3 |      3.3 | three
(3 rows)

I want 9 records returned, each row with 3 cols, 1st col is the ctid, second is the column name, third is the val.

Thanks in Advance !