5. Being Overly Chivalrous
Perhaps I'll later kick myself for this one, but yes, it is possible to be excessively gentleman-like. Even girls who aren't as independent as I am fight the urge to roll their eyes when the boy they're with sprints around like a personal servant. Don't get me wrong: I love having my seat pulled out at dinner, and holding doors open is an absolute must. But your manners transform from polite to creepy when you're buckling my seat belt for me, holding down my seat at the movies before I sit down, or continuously asking me if I need anything, am cold, feel alright, etc. Just keep the courtesy minimal and meaningful -- though you chivalrous men have wonderful intentions, there's a fine line between being sweet and trying too hard.
4. Rolling Your Car Windows Down
Unless it's 90 degrees outside and your car doesn't have A/C (or if your girl doesnt mind a little wind in her hair), there is no reason to have your windows wide open on the way to your date destination. There's a 97% chance the girl beside you put a lot of effort into doing her hair, so I really doubt she wants it flying all over the place while she's trying to hold a conversation and look attractive at the same time. Exceptions can possibly be made if you're driving a convertible and your date asks you to put the top down, but otherwise, please save the wind-tunnel atmosphere for a trip to an amusement park.
3. Listening to Your Favorite Genre
While this is perfectly fine if the two of you share musical preferences, most girls don't want to drive 30 minutes to Middletown listening to heavy death metal and feeling like their ears are bleeding. Sure, if your date is polite she'll go along with your Kiss or Brad Paisley impressions, but it's considerate to put on a mutually-liked radio station. Chances are, you know something about who you're taking out, so you might already have a CD in mind before getting in the car. When in doubt, who can say no to Frank Sinatra?
2. Ordering Two Pieces of Lettuce, Dressing on the Side
I realize you're trying to look neat and respectable, but when you order a Caesar Salad to avoid the red-sauce-on-the-shirt or the brocolli-in-the-teeth dilemmas, it makes me feel like I should do the same. And if I'm not very hungry, maybe I'll order that side salad. Otherwise, if you have an appetite, order something that's going to appease it. That doesn't mean you should try and beat the restaurant's wing-eating record, but be sure to have a filling meal (unless you plan to save room for dessert).
1. Monopolizing the Conversation, Which Stars Yourself
Most likely, I'm not going out with you because I want to hear how much weight you can bench press or how many important and influencial people you've had lunch with. Therefore, definitely don't hesitate to take a breath now and then so your date can get a word, sentence, or paragraph in. True, everyone wants to impress a potential significant other, but I don't want to be able to write your biography when I get home that night.