From Wiki:
Undead is a 2003 Australian zombie horror comedy film directed by Michael and Peter Spierig, and starring Felicity Mason.
After losing her family farm to debt, local beauty pageant winner Rene (Felicity Mason), decides to leave the small town of Berkeley. Strange meteorites fall to earth nearby, turning the inhabitants into zombies. Rene and some other survivors hide in the home of local gun nut and alien abductee Marion (Mungo McKay), and attempt to survive the plague of undead. Marion has a collection of guns and there is a fallout shelter in his basement, which the group of survivors take refuge in. Marion has not had a chance to stock the shelter with food or water yet.
Just watched this tonight, superb 1911 action from the dude "Marion". If you're looking for another Zombie film for your collection, this is one to consider.