Definitely catch Sons of Anarchy. Intense, great acting and the story never lets up. Thrill ride through out.
AMC shows for sure: Breaking Bad, Mad Men. The writing/acting on these shows are top notch.
Arrested Development is one of the best comedie shows ever. I'm rewatching it now and its gets better everytime.
The Wonder Years- I was so glad to re watch this show. I only watched it as a kid so it like rewatching the show for the first time as an adult. Felt like a full circle completed.
IT Crowd - This is a british comedy about a two man IT departments thats a the basement of a business building. Its ****ing hilarious. I heard at one point that this show might come to America but catch the British version, you'll know if you will like by watching the 1st episode.