On our neighborhood walk last night my wife noticed the silhouette of a Pikachu on her radar. It took some tracking, but between the two of us we were able to home in on it. I was able to catch it first, and just held it on my screen until she caught hers. Then I showed her my screen as my "Caught 3 Pikachu" medal flashed up. (I need to stop playing during my lunch break, I'm getting too far ahead of her.)
She also hatched her first Ponyta and caught her first Arbok last night. She's getting ready to make an omelet but wants to wait until she has 60 ready to go.
I find it interesting how different areas spawn pokemon at different rates. We caught several Drowzees in downtown York, PA, but haven't seen them anywhere else before or since. When we want to fill our pockets full of Magikarp, we just go to downtown Baltimore and stroll along the Harbor East promenade.