Alternative to temp tables?

Hi,

I have a simple function that returns a set of rows:

CREATE OR REPLACE FUNCTION foo()
  RETURNS SETOF record AS
$$
BEGIN
    RETURN QUERY SELECT * FROM people WHERE last_name = 'jones';
END
$$
LANGUAGE 'plpgsql'

In a separate function, I call the function and store the results in a
temp table using this syntax:

INSERT INTO tmp_tbl SELECT * FROM foo()


This works, but I'd like to know if there's another way to hold the
results.  Can I get the results from foo() and store those in a local
var such as

recs record[]   OR
recs people[]

Or are temp tables the only way to hold table-based results?