[Rem]

I love Brit TV, mostly Britcoms, never got into the dramas. But there's a lot of good original American television shows too, they just...mmm they don't tend to make it very long. But there IS a difference in humor between our sitcoms and theirs)
Brit humor is more dry and kind of ... well, stuff like the office. it's not big and broad and usually jokes are delivered in this kind of deadpan fashion and it's the absurdity of the situations that make it funny (I think of things like Spaced, Black Books and Young Ones - my fave 3 britcoms - oh oh and Black Adder, the king of just deadpan comedy)
American humor is a lot more broad, with physical comedy happening a bit more, and more...oh I don't want to use this phrase, but, ironic humor xD Repetition is very big! I'm thinking of things like Arrested Development (which is kind of a case by itself), 30 Rock and Community (god I love Community) oh and How I Met Your Mother ...

I will say between the two British TV feels a little more raw and American tv is a lot more slick, I love how messy and dirty things look on Britcoms sometimes x3

I don't like one over the other or think just because something's British it's automatically excellent, I mean...they also have reality tv shows xP and Simon Cowell lol