Not Going Out
Lee: Are you looking for a job, innit? We're not all home boys looking for enuff respect. Are you looking for a job, innit? It's pathetic!
Kate: No it doesn't. It says 'Are you looking for a job in I.T.
The IT Crowd
...and this whole clip makes me laugh every time.
Denholm "Roy! I'm sorry Roy, I may be speaking louder at the moment because I'm wearing earplugs!
Roy "Why are you wearing earplugs?"
Denholm "Haha, that's right!"
Red Dwarf, when Holly informs Lister that the only milk the ship has left is dog's milk.
HOLLY: Nothing wrong with dog's milk. Lasts longer than any other milk does dog's milk.
LISTER: Why's that, Hol?
HOLLY: 'Cause no bugger will drink it.
It gets me every time 
Men behaving badly when they Gary spends all his money that he'd saved
Gary : Do you want an oyster mate
Tony : No thanks mate, they don't agree with me
Gary (pretending the oysters talking) YES WE DO. (or something to that effect, you get the gist)
Cue rolling around laughing clutching the ole sides.
I have changed mine.
Simon from Grandma's House "I am a bit to busy to be a pedophile today"
Found this one when watching Season One of Arrested Development from episode 6. BTW George Sr. is in prison.
George Sr.: I haven't had sex in a month.
Michael: You know, you've been here two months.
(Pause)
George Sr.: It's hard to gauge time.
That only makes sense if you explain that he's in prison.
Oh yeah. Stupid me.
Lager Beer - That Mitchell and Webb Look
http://www.youtube.com/watch?v=zwXjm64a3QE
Bad Waiter -
http://www.youtube.com/watch?v=zVEHqwLVvpI&feature=related
I could not stop laughing once I saw these, Especially the incredibly posh people skit, absolute gold. 
Quote: GabriellaValene @ June 12 2012, 7:25 AM BSTLager Beer - That Mitchell and Webb Look
How have never seen this before? So true.
Quote: Monster Scum Bag @ June 11 2012, 6:32 PM BSTFound this one when watching Season One of Arrested Development from episode 6. BTW George Sr. is in prison.
George Sr.: I haven't had sex in a month.
Michael: You know, you've been here two months.
(Pause)
George Sr.: It's hard to gauge time.
Even with the explanation is it funny?
Yes!
Yes, very much so.
Quote: yowie29 @ May 9 2012, 8:55 PM BSTMen behaving badly when they Gary spends all his money that he'd saved
Gary : Do you want an oyster mate
Tony : No thanks mate, they don't agree with me
Gary (pretending the oysters talking) YES WE DO. (or something to that effect, you get the gist)
Cue rolling around laughing clutching the ole sides.
"NO WE DONT"
http://www.youtube.com/watch?v=SkDcGhgYPS0
Martin Clunes looks like he really is laughing at one point.
Quote: Mikey Jackson @ May 7 2012, 10:06 AM BSTRed Dwarf, when Holly informs Lister that the only milk the ship has left is dog's milk.
HOLLY: Nothing wrong with dog's milk. Lasts longer than any other milk does dog's milk.
LISTER: Why's that, Hol?
HOLLY: 'Cause no bugger will drink it.
It gets me every time
Rimmer: Is that painting yours, its rubbish?
Lister:.............Its a mirror!
Not sure if its the funniest but I smile when ever I see it.
http://www.youtube.com/watch?v=pioBHf11N78
It's one of those weirdly perfect Family Guy piss takes.
I think this was on Not The Nine O'clock News...(in comedy "European" accent)...
Customer: I'd like to buy some deodorant please.
Chemist: Ball or aerosol?
Customer: No. Underarm.
Ha!