Perla’s–Austin’s very attention-getting seafood restaurant–is celebrating its one-year anniversary with a big ol’ shrimp and crawfish boil this Sunday. It’s all you can eat, including free beer, for $20. Dr. Zog will play zydeco. Co-chef Larry McGuire says they’ve bought 400 pounds of the Louisiana mudbugs, so they need all the help they can get. 1400 S. Congress. Sunday, April 18, from noon to 5.