If you're in Victoria, Don Mee's, which has the tackiest neon sign on the street, has dim sum after midnight. Given the cheesey sign, I really didn't expect much but it was great. Of course, we'd been pounding beer at Swans before that so it may not be that great but my beer induced hunger didn't care.
There's also a small place across street that sometimes has dungeness crab in black bean sauce that is killer.