You should "Wonder" in here.... We came up to Portland early for a Saturday night concert at the Wonder Ballroom and conveniently located below the venue is the Bunk Bar. I fitting name for a funky restaurant slightly below grade giving you the quasi feeling of actually being in a bunker (minus the windows). Pass by the AC/DC pinball machine, check out the chalk board menu then place your order at the bar. Our bartender was friendly and helpful with suggestions & explanations. Their specialty here is sandwiches and they do a fine job of it.
I ordered up a menu special Shrimp Po Boy. The shrimp was lightly breaded and fried up nicely served with lettuce, tomato, pickles & mayo. The shrimp were medium sized and succulent. It was difficult to eat the sandwich without the shrimp falling off. Each of the ladies got pulled pork sandwiches and promptly admitted they should have split one. One exclaimed this reestablished some of her faith in eating out! They both enjoyed them and had leftovers to boot.
I recommend checking this place out before a show. They do have a full bar much that is more extensive then what is offered in the venue along with a handful of micro brews on tap. We noticed they were closed when we exited sometime after midnight. It's odd considering it was a Saturday night and I'm sure they could have captured some of the audience on the way out. Regardless it's a great little eatery tucked in below the ballroom.

Stopped by here to grab a sandwich and some beers on vacation and this place was really great. The bartenders were very nice and the food is out of bounds good. I had the Italian sub and definitely tasted like something you could get in Jersey or New York. Also wicked cheap to drink here which is also a plus.