Newspapers
Summer
Illness
Reality TV (Especially comedians who do it)
Politicans
Idiots
Richard Leaf (I'm just jealous that he's married to Tamsin Greig)
Most modern comedy ("Fear, Stress and Anger", "Roman's Empire" etc.)
Comedians who tell racist jokes (Bernard Manning, Jim Davidson, Roy "Chubby" Brown.)
My current workload for my university.
The fact I hardly ever get the breaks in comedy.
Fact X Importance = News
Offical QI Newshound