We recently rented a Fetal Doppler, which is a device that allows you to listen to and monitor the baby's heartbeat. Such an incredible experience. Felt like we were tuning in strange radio signals from a distant planet!

We recorded a sample for fun:

Baby's heartbeat (~160 bpm)

We were having so much fun, we decided to record our own heartbeats!

Cindy's heartbeat (~82 bpm)
Sean's heartbeat (~80 bpm)

Dopplers are available online for about $20 per month.. We got ours at BabyBeats.com -- http://www.babybeat.com/index.html