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In no particular order:

Homer Simpson - early and middle years Simpsons
Butters - South Park
Tracy Jordan - 30 Rock
Brian - Family Guy
Stewie - Family Guy
Ned - Ned & Stacey (Thomas Hayden Church)
George Costanza - Seinfeld
Michael and Dwight - The Office esp Seasons 2-4
Will Ferrell/Dana Carvey - SNL
Barney - How I met your mother
 
1. Del Boy
2. Peter Griffin
3. Father Jack Hackett
4. Father Dougal McGuire
5. Norman Stanley Fletcher
6. Frank Gallagher
7. Al Bundy
8. Maurice Moss
9. Super Hans
10. Baldrick
 
10. Barney Stinson (I didn't watch "How I Met Your Mother" when it first came out, but started watching it with my roommate when he got it on DVD, and I absolutely love it. Barney is by far the funniest character.)

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