Even if National Beer Can Appreciation Day isn’t a real holiday, the Percy Street BBQ crew is still doing all it can to celebrate it tomorrow. Beginning at 5 p.m., the South Street barbecue joint will offer up its huge stock of canned craft beers — it runs more than 100 deep — for half price. To boot, a $35 Restaurant Week menu will be in full effect, too. We’re guessing that this is going to go over a lot smoother than Gun Appreciation Day.