Well, I would proceed to talk for hours about what makes my favorite Pokemon, Dragonite, far superior to anything else in the entire series, but I think I'll just refer to this video instead. Have a nice day.
Oh, and my second favorite would likely have to be Alakazam, psychic glass cannon FTW. You got a Dragonite and an Alakazam in the same room together? Forget about it. Bronze goes to Blaziken, because he looks like an absolute badass. If you're like me and started with the little fire chicken, you didn't exactly have high hopes for that evolution chain.
Blaziken made a lot of us happy, I think.