Requirements:

1. Must not give off an air of "I'm trying too hard to be quirky and oh my god, come on people, LAUGH!" like Russell Howard
2. Must not come across as "I like being a mean-spirited, attention-seeking cnut but not for any apparent reason" like Frankie Boyle
3. Must not be one of those smug Ben Elton types
4. Must have good delivery
5. Can be from any era