Five times. Count them: Five. That's how many times I had to jump start my blazer due to the cold. And it was REALLY cold out there. The battery is less than a year old, so I wouldn't have expected this. I think I need to go talk to the people at AdvanceAuto (or AutoZone?), where I bought the battery.
On the bright side, this forced me to pick up a battery charger. I've needed one for a long time. It works quite well, too. Now, all I need to do is keep the charger charged.