Going on a date isn't like meeting people in other situations...there are all sorts of things that tend to make you extra nervous! Admitting that you're nervous on a first date or even just around someone new can be a great icebreaker. They're probably nervous too, so just vocalizing what you're both thinking can really ease the tension. Look at them, really look them over, and notice things about what they're wearing or how they're acting. Notice how they talk. Their accent. Look for if they're wearing something particularly nice, unique, or handmade-looking. Comment on these things that you notice. By letting them know that it's okay to talk to you and ask you questions, you can really help break the ice in your budding relationship. Say something like "If you have anything you want to ask me, go ahead." You can even give them more guidance. For example, "If you want to ask about my wooden leg, it's okay. I can talk about it." There's something to be said for just saying what you're thinking when it comes to the matters of the heart. If you see someone that you'd like to get to know better and then date, you can just tell them that. For some people it will be a turn off, but for most (especially the attractive ones) a break from all the games will be a nice breath of fresh air. Say something like, "I'm sorry, I saw you from across the room and I kind of felt like the air got punched out of my lungs. I just had to introduce myself or I'd never forgive myself." If they have a somewhat unusual name (old fashioned, ethnic, anything other than the standard Sarah/John), then comment on and ask them about their name. You can ask if they were named after someone, how their parents chose the name, and if they like their name, etc. The sneakiest and yet one of the most effective ways to break the ice with someone you don't know yet is to ask them to settle a bet for you. For example, say something like, "My buddy says this shirt makes me look like Bill Cosby during his blue period. What do you think?" or "All my friends say that guys won't go anywhere near girls with short hair. What do you think?"

Summary:
Admit you're nervous. Notice and comment on something about them. Ask them to ask you something. Be blunt. Comment on their name. Ask them to settle a bet.