Any Belgian Trappist beer and Fraoch and Grozet from the Heather Ale co.
mmmmmmmmm
You've started me thinking about beer at half ten in the morning yu git! 
favourite beer?
Almost any that have been left in my fridge (preferably by other people) long enough to be fucking freezing cold. If desperate enough I will even drink Harp that has been left in my fridge but never Tennents (but thats cos I'm alergic to that). Normally Smithwicks or Bass Ale, off the Guiness these days, Czech Budvar is good to.
I like that thingumies Bitter and Twisted but the local Wetherspoons appears to have replaced it with some shite that they couldn't even give away for free the last time I was in.
Anyone ever try McKewans? Argh sommathat stuff is just vile (if I remember right they did an ale, lager, bitter...), so vile that you wouldn't even drink it to piss off stupid anti-fascists and lefties (and some anarchists) in the days when they sponsored Rangers. They no longer exist so thank fuck there is no chance of anyone ever leaving any in my fridge!
Don't know anywhere I can get it in a bottle in Belfast.
Myself and a few comrades drank the barrel dry once in Wetherspoons then had a whisky each. Then one of my comrades boked on my head
Later that night was the first time I was ever not allowed into a taxi! (Three times
) This had nothing to do with the boke, apparently it was only "pre-boke spray" and was thankfully pretty easy to clean up.
I was in Richmond the other day and found this shop.... http://www.realale.com - sadly it was closed 
Rkn - oh yeah - Masterbrew is a fine choice, as is Shepherd Neame's Spitfire. Their organic one is also worth a slurp and they used to do one called Early Bird, but I only had it once and couldn't find it again, not even when I went to the shops near their brewery in Faversham, where my (now ex-) girlfirends parents lived. 
Guinness is what I drink in Ireland and Masterbrew is my favorite in Kent but at the moment

http://www.unibroue.com/products/maudite.cfm
does it for me
Although for reasons of economy my current bulk drinking is

http://www.thebeerstore.ca/beers/branddetails.asp?id=7846
Its around 45p a bottle, the other is more like a pound.
East Coast:
Smuttynose Farmhouse Ale
Smuttynose IPA
Geary's Hampshire Special Ale
Unibroue Fin Du Monde
Brooklyn Black Chocolate Stout
West Coast:
Stone Double Bastard Ale
Lagunitas Censored Rich Copper Ale
Rogue Shakespeare Stout
Old Chub Scottish Style Ale
Foreign:
De Proef Flemish Primitive Wild Ale
Affordable:
Schlitz
Pabst
Naragansett
Haffenreffer Private Stock













Am dying for a pint already and it's only 10:30. Got at least two hours before I can nip across the road for a swifty and another six and a half hours before the working day ends.
Dreaming of a slightly chilled, foaming pint ...
Ideally it would be a Thwaite's bitter, brewed in Blackburn, but impossible to get down here.
Or a pint of Shepheard Neame's Best
Anyone else's favourite beer?