I'm not really an Evangelion fan yet, but you wouldn't know that from the quantity of merchandise I have. I saw a few clips on YouTube and since that time I've collected some figurines and sets. I'm either going to be glad when I finally get a chance to watch the series, or quite disappointed.
The series is quite old, but movies have been released in the past few years keeping the franchise alive, and merchandising follows right behind it. Most recently, cards issued one per pack with wafer cream snacks have been seen in stores. For a short while, though - they seem to have all disappeared quite fast. I bought 10 of them to get a good sample of what's inside.
They tie in to the entire original series, I think. There are other series of these cards that relate to, for example, a single movie. C- prefix cards are character cards, M- are machines, SP- are special cards that seem to be character-related, and S- are series (episode) cards.
The cards I found are below, front and back.