Scrubs, How I Met Your Mother, IT Crowd, Black Books and Family Guy. Those are great shows.
Scrubs is silly humour, many weird funny fantasies, and lots of puns and funny events.
How I Met Your Mother is a classic sitcom in the Friends genre, it's very passive humour, it comes by itself in the happenings.
IT Crowd has geek humour. Two nerdy guys who knows almost everything while everyone else is an idiot, and they do fun shenanigans.
Black Books, a show starring two great comedians, Bill Bailey and Dylan Moran. Hard to describe, but it's great and the jokes are awesome. Watch the comedians, and if you like them, you'll like the show. Bill is full of clever jokes, he's very intelligent, while Dylan has very cynical, nihilistic humour, and is seen often making fun of special forms of people.
Family Guy has it's joked based on similes and black humour. They make fun of every ethnic group that exists, every race, every religion, every celebrity, everything. It's satirical and the characters have their own fun ways. The retarded dad, the nagging mother, the idiot son, the hated daughter, the gay, evil baby, and the clever, cynical dog.