I bought this series purely based on having heard good things about it, and having never actually seen any of it myself.
I am so glad I did, as this show is superb. It just has the perfect mixture of comedy, action and drama and is extremely well written.
Bryan Cranston gives, in my opinion, the best performance of his career as Walter White, who is diagnosed with terminal lung cancer and decides to "break bad" and start using his skills as a chemistry professor to cook and sell chrystal meth. There are a number of scenes during the series where his tragic portrayal of the character would bring even the manliest man to tears, and at other points make even the most miserable person laugh!
It is fairly safe to say that you should not watch this expecting to see the same slapstick comedic performance as "Hal" from Malcolm in the Middle.
Aaron Paul, who I had never heard of before, is brilliant as Walt's burnout drug-dealing business partner and is at times hilarious.
The script and overall writing are awesome, as is pretty much everything about it! The only downside for me was Walter's wife, she is quite annoying throughout!
Overall I would recommend this to anyone who likes good drama, and those that like dark, clever comedy. In my opinion this is series is a masterpiece.