I see a couple of our better local food scribes have gotten to Angry Crab recently, I have been a couple times as well.

Ive gone early each time and havent waited more than 10 minutus for a table. BYOB is nice.
Items available on the board:

bugs:

snow crabs and shrimps in backgroud:

Crawfish were good, not quite up to GNR's:
Toons or Cajun Connection standards but good. Only a few mushy ones. We went with their most basic spice level on the visits, shimps were decent, snow crab legs were meaty, but who cant steam/boil a crab leg cluster properly. Thought the pay by piece of corn and sausage was odd/expensive. Bummed on each visit there were no blue crabs. In the end I was kind of garlicked out and was craving a salad or a steak to break the one note theme of the meal.
Looking forward to trying the new steamed seafood joint opening in Skokie(The Boiler) later this year as comparison. Compared to other cajun seafood spots I have been around the country Angry Crab was on par price and quality wise, liked that other versions I have been to(Denver) offered Pho, gumbo, and other asian/cajun dishes vs just the boils.
I like this spot, big draw for me will be the period in which they are getting live crawfish and being able to get them on a whim vs an event. A six pack and a few pounds of bugs or blue crabs stop.
Angry Crab
5665 N. Lincoln
Chicago, IL.