I don't know what's on amazon prime or netflix, because I used hulu and pirated torrents. I'm sure you can find most of these somewhere.
Breaking Bad - Needs no explanation.
The Walking Dead - See above.
Mad Men - See above.
Dexter - See above.
The Tudors - Decent story, lots of sex. Watch with the female.
The Borgias - See above.
Boardwalk Empire - Best plotline on TV. Necessarily violet, dark, and addictive.
Bored to Death - Smart, quirky comedy with Jason Schwartaman, Ted Danson, and Zach Galifinakas.
Game of Thrones - Most epic show out there.
Flight of the Conchords - Brilliant musical comedy.
House - The older episodes the better. You've probably seen it.
The Office (UK and US) - See above.
Community<span style="font-weight: bold; text-decoration: underline;"></span><span style="font-style: italic;"></span> - Oddball comedy with great characters.
Sherlock - BBC Sherlock Holmes adaptation, the best Holmes ever. Blows any movie out of the water.
Dr. Who - Greatest series ever made. The modern revamp (starting with the 9th doctor) is where I started - no show will grow on you as much as this one.
Torchwood - Dr. Who spinoff. I'd watch John Barrowman in anything after seeing this.
Luther - BBC show, tough smart black detective. Really good villians.
Firefly - One of the most fun scifi shows ever, sadly only 1 season.
Castle - Firefly's lead actor (Nathan Fillion) in a fun detective show as a mystery writer that helps solve crimes. Is way better than it sounds - Fillion brings the same likable bravado from Firefly, carries the show.
Alphas - Special unit of humans with extrordinary abilities fight to keep the malicious of their own in check. Think modern x-men but not cheesy and without costumes. Fantastic acting in spots.
Sanctuary - Syfy's best show - Amanda Tapping leads a small cast at aiding the world's mutant-ish animals and people.
Haven - Hot chick uncovers mysteries in a Maine town where many citizens are cursed with powers.