You're probably already headed to a party or Rocky Horror screening or some such thing, but if you're out and about and want to hit up the coolest show of the evening:
Fucked Up with The Sadies
@ The Garrison
$door, probably cheap!
I can't tell you how many times I've seen this band live - they do, uh, live here after all - but I've never, ever been disappointed. Probably the most fun you're going to have at a live show, ever. Seriously. Plus, they tour like fiends, so you international folk will probably get a chance to see them if you haven't already, fear not! So throw on a costume and head on down Dundas and hit this one up.