I have been going to the North Arlington restauran...

I have been going to the North Arlington restaurant for several years now, and I've never been disappointed. It makes me sad to read some of these reviews, because I've never experienced bad food or service.
At busier times, in the evening and on weekends, the hostesses offer buzzers and a trip to My Martini two doors down (they even let you know if the wait time will be shorter if you dine at My Martini.) The restaurant is small, so wait time for larger parties can be a while if you don't call ahead, but I've always found the hostesses, waiters, and chefs extremely friendly and knowledgeable.
When my friends and I first started eating there, we inundated the chefs with questions about what they were preparing, and what we were ordering. They never hesitate to give you info, no matter how busy they are. The waiters and waitresses have always given us the same treatment, and I've never had to wait more than 5 minutes to place an order (10 if in a large group that's not familiar with the food.) I reccommend sitting at the bar - it's worth the wait.
I've never tried a roll I didn't enjoy, or a dish that wasn't truly yummy. Their sushi and sashimi always tastes fresh, and looks awesome. The presentation (marble slabs, decorative swirls of sauce and wasabi) is always entertaining. Their boats rock. I second whoever commented on the wasabi crusted salmon roll - we've dubbed it the "potato chip of the sushi world." I can honestly say that none of my orders have ever been messed up or forgotten, and the wait time is no longer than any other restaurant (10-20 minutes.)
This is an all around treat for North and South Arlington! (And Fort Worth, for that matter - the newer location is beautiful.) I've tried quite a few sushi restaurants, and Pirahna continues to remain my favorite!