About retrieving objects' priviledge info such as grantee & its privileges for a specific object (view, table, function, etc.)

Hello,

May I know the commands to retrieve objects' privileges info please?
Something like:

Object Type, Object name, creator, grantee,
privilege, is_creatable
=====================================================
table T1 user1 user2
select, update, delete no
table T1 user1 user3
select no
view V1 user2 user4
select no

P.S. (postgreSQL 8.0.1)

Thanks a lot,
Emi