Any Woody Allen character, except for the Jewish aspect.
I’ll echo Ryan_Liam with the B5 reference - when I saw the series, I readily identified with Delenn. I think I was at a point in my life where I could sympathise with her attempts at juggling her sense of duty, her beliefs, and what the world expected of her. 
Grace Butler, from Grace Under Fire. Or Roseanne, but only from the early seasons before she freaked out.
Moving this to Cafe Society.
Miranda on Sex in the City … before she got pregnant, anyway.
Dawson. My personality is similar, I want to be a director, and I even look like the guy.
BWHAAA! I posted this thread in the wrong forum!
I’d be Homer Simpson, DOH! :smack: :o
Lisa Simpson.
One of my friends has described me as the love child of Ross Geller and Daria, which I think is fairly accurate, if difficult to imagine.
The Fonz from Happy Days.
Jeremy from Sports Night. Fairly intelligent (high IQ but no degrees) with a broad but unfocused knowledge base. I also have a tactile sense of humour. Hard to explain. And I keep an umbrella so I don’t get wet in the rain.
Others have described me as a “Peppy Dennis Miller” or a “Relaxed Lewis Black”.
Mr. Burns. All I need are some hounds.
Excellent.
Maynard G. Krebbs
and IANA guy. 
For some reason, I can really relate to the uncle from “Grounded for Life”.
Probably Tara from BtVS. I’m very quiet until I feel comfortable around people.