Pre-pg, I felt like we would have all girls. I'm feeling now more like it's boy-ish but I wouldn't bet any money or anything on it. I thought DD was a boy, too, until the first time we heard her heart rate and the m/ws kept guessing girl - altough they didn't say it was because of the fast rate.
The pendulum thing was right for my MIL, 2 SILs, and everyone in MIL's office. It said we'd have a girl then 2 boys... but we were only planning on 2 kids... so we'll see!
A L&D nurse friend of my mom's said that the most reliable gender predictor she's seen (even better than heart rates, etc.) was which gender name the parents are SET on first. For example, we knew DD would be ELizabeth even before we were married but we didn't have a boy name picked out even during labor. We had a short list, though. That said, this time, we've got a girl name for sure and I'm set on a boy name but DH doesn't love it (but doesn't have anything that he likes better.
I believe in mother's intuition!