Actually I always advise people to simply "be yourself".
Too often when people bend over backwards to (impress) someone they're not being their "authentic self". The end result is a "bait & switch" scenario in which someone tells you what they think you want to hear or behave a certain way in order to win you over. Once there is an emotional investment on your part they show who they really are. It's not uncommon to hear someone say;
"He/she is not the same person I fell in love with."
Instead of trying to impress someone the first date should be about establishing rapport and determining whether or not you have enough chemistry and things in common to warrant any future dates.
Once you decide to "be yourself" much of the first date jitters fades away. A lot of people have forgotten that dating is supposed to be a fun sociable activity. The truth of the matter is if either person does not have a good time on a first date then there will not be a second date! The first date should be light and easy going instead of using interrogation questions. Instead of asking someone; "Where do you see yourself in 5 years" you should focus on how "tonight" is going.
First date questions should be “ice breakers” and encourage the other person to relax. What led you to ask me out? What do you enjoy doing for fun? If you could visit any place in the world where would you like to go? What is your favorite type of food? Who is your all-time favorite singer/band? What is the funniest thing you ever heard or saw? Even with these questions you don’t want to ask them in “rapid fire” style.
Dating should be a fun exploratory process. When people feel relaxed and comfortable they reveal more about themselves. Awhile back I wrote on this. http://hubpages.com/relationships/Three-primary-re...