Wow the board is busy today!
Shelby, I agree with the others that it sounds like your LO is ready to make the jump to one nap -- welcome!
Amy, how far is your LO into the nap transition? Our naps started short for the first few weeks (when he did do a single nap), but in the latest go-around have lengthened another 15-20 minutes. A couple of my girlfriends said their LOs did the same thing.
Kelly, I think you are totally right that I need to have him down earlier last night, and I knew that, but let him play in bath for too long. He woke at 5:20 this morning (so I'm definitely thinking he needed more winddown last night, and got overtired from falling asleep so late). I have to keep reminding myself that they are especially sensitive during this nap tranistion.