I bought and played Good Job! after hearing various podcasts talk about it and played the whole game in co-op in two sittings that took about 6 or so hours. I had a really good time with Good Job! it was a really nice goofy game with a fun sense of humor and a simple but realized art direction. However as much as I liked the game I did have some issues that took away from the overall experience. First there is a weird consistency with the difficulty of some of the puzzles that just come out of no where and normally that wouldn't be a big issue except your required to finish all levels before going to the next floor with no way to skip them. Second there are bugs and glitches, such as clipping, that will make you have to restart levels which really hurts your enjoyment when your 20 minutes into a level and have to start again.
Good Job was a really enjoyable game to play and I would highly recommend it to anyone looking for a short co-op experience.