Thanks for the comments, dudes. I will try to incorporate your suggestions into future posts.
For writing tips - I don't really go there that often because I do believe that there are plenty of other resources out there, from professional blogs to books to podcasts to live panel discussions. I don't know if I'm really qualified to be sounding off about writing when none of my work has been bought or produced. But I can tell you what I hear, what I like, what I've learned, and what I struggle with myself.
I do love dialogue...so here's my take on that:
Make it short. Cut out as many words as you can. You probably don't need to start any of your characters' lines with words like "well," "so" or "anyway." Don't have your characters speak in perfect complete sentences. Let them interrupt each other. Remember WEST WING? God, that snappy Aaron Sorkin dialogue was so great. People hardly ever got sentences out. They also used to repeat words a lot, which was fun. Also remember that people rarely say what they're thinking or feeling. There might be a big confrontational moment in a later act where it finally comes out, but for the most part, people are not good communicators.
Listen to people speaking in real life. Sure, dialogue on TV and in film is cleaner and prettier (in real life, people say "like," "um," and "you know" a disturbing amount of times), but being a good listener will still help you be a better writer.
Think about what people DON'T say. MAD MEN is great for this - there is so much conflict created in those tense silences.