Grant on multiple objects

Is it possible to GRANT permissions on multiple objects at once? I
would like to assign limited permissions on multiple objects (tables,
indices, sequences in the same database) without granting full
ownership. For example, something like this:

GRANT SELECT, INSERT, UPDATE on (SELECT relname FROM pg_class WHERE
relkind in ('r', 'i', 'S') AND relnamespace=2200) to jason;

Is this possible? I understand from reading the documentation that
this is not in the SQL standard, but I'm hopeful there is some type of
work-around.

Thanks,

--
Jason Dixon
DixonGroup Consulting
http://www.dixongroup.net