pliny the elder at 2011-11-13 18:24:57:
The biggest driver of humor over there is still class, mixed with a little xenophobia and smut, and the UK's social structure: what the Brits call "The Establishment". The other driver, and what Gervais taps into, is what the Germans call Shadenfreude, or taking pleasure at the misery of others.
And also the Brits long tradition of satire, with people like Swift, Holbein, Peter Cook and many others.
Here are a few links from the 60's->80's for your enjoyment, of things most of you may not have seen (so only one python link), but some are not safe for work.
Dudley Moore:
http://www.youtube.com/watch?v=_ZEEgIti8sM
Python:
http://www.youtube.com/watch?v=IIAdHEwiAy8
Yes Minister:
http://www.youtube.com/watch?v=Eikb2lX5xYE
http://www.youtube.com/watch?v=zvNw0P5ZMbA
http://www.youtube.com/watch?v=zL_m5Czneno
Billy Connelly:
http://www.youtube.com/watch?v=oKMQKgSnGy8
Fawlty Towers:
http://www.youtube.com/watch?v=78b67l_yxUc
Carry On:
http://www.youtube.com/watch?v=kvs4bOMv5Xw
http://www.youtube.com/watch?v=TXImN77fadE
Ronnie Barker:
http://www.youtube.com/watch?v=4RwyPDPlFA8
http://www.youtube.com/watch?v=pY1x5gPTEJ4
Classic sketches:
http://www.youtube.com/watch?v=S3E5vYNzrds
http://www.youtube.com/watch?v=0JSahEDRjvw
http://www.youtube.com/watch?v=Ty68LPKRQQQ