Yep, this is the first one! Glad you liked it.
She has a Comedy Central special from I want to say close to ten years ago now, and her and her creative partner Kurt Braunohler have hosted a stand-up/variety show called Hot Tub for about 7 or 8 years as well. It's how she got started, and she's a damn good stand-up, but her voice work has definitely made more people know who she is.
I'll see if I can track down her old special then. I've enjoyed her in mostly everything I've seen, so I'm definitely interested in seeing the new special.