So I finished a project on my breadboard and began moving it over to a small piece of strip board. After soldering it all together I fired it up an nothing happened... I started to investigate with my multimeter and noticed that the voltage after the 5v regulator the power hovered at around 5v... so far so good, but after the servo it dropped significantly to 2.8ish v. This wasn't an issue when it was set up on a bread board, is there something I'm missing?
Servo's need an amp or so. Perhaps before you had USB power to help out?
4 AA rechargable cells are the power source of choice for 6V servos, small 9V
alkaline batteries are for radios and other low current devices, can't provide
anything like enough for servos / motors - can just about power an Arduino alone.
Thank you! I'm positive that a single 9v was running the servo and ping sensor while it was on the breadboard... but I had literally just took that battery out of the package. Is it possible that during my testing it was fresh enough to power it, but has drained since then?
As stated previously a 9V battery and servo will not last long, in fact you might find that the system will be erratic due to the impulse loading on the battery due to the servo.
Tom...... 
You probably can power the arduino from a 9v battery, but you need to power servos via an external power supply like below.
keyboardbandit:
Thank you! I'm positive that a single 9v was running the servo and ping sensor while it was on the breadboard... but I had literally just took that battery out of the package. Is it possible that during my testing it was fresh enough to power it, but has drained since then?
Yes, but it would have struggled and probably reversed a cell or two eventually.