Cafe rue Orleans is 1150 College across from the old Washington Regional. I'm not a big fan, but one of the original owners was a Cajun. Lyn D's (Cajun Gypsy) is in Fayetteville at 535 W Poplar (not Sycamore), near the skanky Bottoms Up club. It is a bit up and down, but most authentic IMO for NW Ark. During season they'll sell you a bag a bugs if you ask in advance. They also do a good boil themselves, and the boudin is good, usually. I used to go there a lot before I developed shellfish allergy.