Ian McEwan's Saturday was probably the best book I read last year: you can bash through it in a sitting or three, it's wonderfully readable and incredibly rewarding, and he has a command of prose that, as an Englishman, I kinda resent in a Scot (just kidding).
If you'd like a really enjoyable well-written chuckle, Hanif Kureishi's "The Buddha of Suburbia" is hard to beat. And far, far better than the TV adaptation.
Iain Banks' The Crow Road is a great pot-boiler... funny, and relatively light work.
And ok, plenty of people are put off by Dickens, but if the Pickwick Papers doesn't make you laugh out loud, you are probably made of granite.
Hope it helps.