Don’t tell Jeff Krulik he’s famous, especially if anybody's around. “I’ll be with somebody and they’ll say to somebody, ‘Hey, this is the guy who made Heavy Metal Parking Lot!” says Krulik. “And I know what’s coming next: A blank stare." "It's humbling," says Krulik, who really is one of the guys who made Heavy Metal Parking Lot. But he is grateful for whatever renown he's gotten from the enduring, adored-by-all-who've-seen-it 1986 guerilla docu…