The Buick Regal is one they definitely got right! I have a 1995 and a 1991. The 91 has 230K miles. The 95 has 150K. Both have the 3800 engine. I am looking to replace my 91 with another 95. While I wish the mileage was better, it can get 30 mpg + for straight highway.
I bought the car with 18,000 miles on it and have driven it for 100000 miles. It has been the most reliable car I have ever owned. The only problem I had was with the air conditioner clutch. This car sure blows the myth about foreign vehicles being more reliable than American cars.