Reading this thread, I'm shocked about how few "Lovin' the 69" responses there are.
Best observation, might be this one:
I think I have learned to love the attitude of a BJ as much as the technique. A lady that gives you the impression that there is NOTHING she would rather be doing than sucking you off can overcome many skill inadequacies. On the other hand great skill rarely will overcome a total lack of enthusiasm.
I love eye contact when it's me only getting served, but I just love love LOVE tasting a beautiful woman's moist sweetness while she's enjoying -- and really ENJOYING -- my man tackle. I love to feel her wet mouth stroking me, while her hands gently tickle the sensitive skin on my scrotum. I like to feel her hands explore my genitals and ass like they were a wonderful new world that she wants to know completely.
And another thing -- when my cock is in her mouth, it distinctly changes the sensation while she's coming. I can't describe how it's different, but if she comes from me kissing and tonguing her sweet pussy, it just feels FANTASTIC to stay in her mouth while she writhes and wriggles through the orgasm. I've never felt a woman who was able to control whatever happens to her mouth during an orgasm, and I've never felt a woman whose mouth did the same things while she was faking an orgasm. It's just a spectacular feeling.
Holy shit I'm horny.