Yeah, Breaking Bad is quite a something.
As for recommendations, here's a couple and one:
Firefly - a sf-western of sorts, made by Joss Whedon and staring Nathan Fillion among others. A fantastic, fresh look at the genre, with lots of trope decompositions, geeky humour and actually quite hard science(as far as this kind of shows goes). Unfortunately, it got canceled even before the first season ran its course, so there's just fourteen episodes. Luckily, the loose ends were tied up in the follow-up feature-length film "Serenity", which should be considered as part of the series. Altogether, a true gem in the genre.
http://en.wikipedia.org/wiki/Firefly_(TV_series)
Boardwalk Empire - a prohibition-era gangster story. Starring Steve Bucsemi as the Atlantic City's bootlegging kingpin and politician. Gritty and down-to-earth, it skillfully makes us disapprove of the characters' actions while simultainously making us root for them as we see where they're coming from. In a similar theme to Breaking Bad, there's a lot of regular people doing questionable things.
Currently renewed for the fourth season.
http://en.wikipedia.org/wiki/Boardwalk_empire
Life on Mars - a British series following a present-day police officer seemingly transported to the 70s after an accident. At its heart, a seemingly by-the-book case-to-case cop show fare, with somewhat predictable clashes between the police procedure approach of the protagonist and his new collegues, but with delicious silver lining of the matrix-like "dubious reality" kind. I love the ending.
There's just 16 episodes(split in two seasons), and that's just about right for this show.
http://en.wikipedia.org/wiki/Life_on_Mars_(TV_series)
There's also an almost carbon-copy US remake, if you're allergic to British reality(which I assume is the only probable reason for its conception).