Torchy's is pretty overrated. Mediocre tacos for way too much money.
Uchi is good but it isn't even the best sushi in Austin, much less in the country. I prefer Tomo. Masa in NYC is supposed to be godlike, but I can't say I've been there. I think its the traditional "Best Sushi in America" thing. Uchi puts a lot of work in their rice I guess, but their fish is just average. I guess they're creative with their rolls but their Nigiri is below Tomo, Musashino, Komé, and also Hanabi.
County Line is just ass quality barbecue. Pok-e-Jo's has better bbq than County Line. Rudy's is decent for a gas station Q place outside of deep East Texas. Something about rural East Texas where you can pull up to a shack that looks like it's about to collapse which is attached to a potentially abandoned gas station and have the best meat you've ever tasted, but this thread is about overrated food, not expectation defying food.
For controversy's sake, La Barbecue is pretty damn overrated. It's decent barbecue, but nothing I would wait in line for. Especially recently where the quality has been downright shrugworthy.