As for favorite characters, I loved Phoebe and Joey. I actually have friends just like both of them too! I also admit that I still have a huge crush on Chandler... minus the first season vests. (And since I am a little like Monica with my OCD and love for all things domestic, it might have worked out nicely. I am not at all competitive or needy though.)
I always thought the Chandler & Monica romance was wonderfully cute and nicely done.