These are cutting edge television shows that many people esp. in the UK haven't seen. But you must, unless I state otherwise:

LARRY SANDERS:
Now this is a gem. A real gem that's buried so deep in earth that you really have to hire a jackhammer and Daniel Day-Lewis out to find or even hear about it these days. Larry Sanders is the for runner and indeed inspiration behind 'The Office', 'Curb your Enthusiasm'many a mockumentary and so much more. Indeed, Ricky Gervais interviewed Garry Shandling (Larry Sanders, in one of the most awkward interviews ever.
It is the behind the scenes story of a neurotic talk show host, ground-breaking for its time, that guests like Sharon Stone, Jim Carrey, Alec Baldwin, Jon Stewart and Ellen Degeneres fought to get on the show as themselves and make fun of themselves. It also boasts some of the finest comedic talent when they were young fresh faced and relatively unknown including Jeremy Piven, Janeanne Garofalo, Jeffery Tambor and Rip Torn.
There are key moments of absolute hilarity but always ingrained within character and always with a deeper subtext. The final episode is almost tearsome. You feel for the characters in between all the mayhem. And a more exposing insight into showbusiness there has not been. This show was the flagship series for the then new HBO, and single handedly made it.
They'll never make something like this again. Then again they'll never make El Dorado again

ARRESTED DEVELOPMENT:
If you haven't seen it, you must. If you don't like it, I'm not sure we'll get along. It is sprawling frenetic genius. Comedy, acting, form, style, slapstick done to new dizzy heights of perfection, intellect and eye popping mastery. No wonder Fox cancelled it.
I have watched every episode at least 6 times, even when I do have a life. Sparkling, crackling, fuzzbang. too many words that are too slight to adequately describe it. This has to be the finest comedy ever to be produced on television. It will forever go down in history as such for being prematurely terminated. Not that that makes it ok. Just leaves you salivating for more. It is good to see alot of the stars going onto movies such as Michael Cera. The combined comic talents of the cast and the visionary story and script is something to be savoured.