GetLastInsertID ?

Happy new year to all pgsql fans !

Sorry for this trivial question but I couldn't find an answer in the
archives :

I use SERIAL type in tables for id columns in order to auto increment
them. Is there a way to get
the last inserted id in the table like we do with MySQL using the
GetLastInsertID ?

My need is to get back the new id just after inserting. Is nextval can
respond to this need if I call it
just before inserting ?

Thank you very much.

Stéphane