Spotted the pineapple in Person of Interest season 2 episode 2, they also used what looked to be an alfa device hooked on the back of a laptop to highjack wifi :)
Here is the pineapple - http://i.imgur.com/v9BaF.png
They were using it in a scene to do with sniffing cell phone traffic, so not in the right context, but still nice to see writers have some idea about the devices we use XD