I personally love the compilation games that have extra effort put into them. For example, the first 5 Namco Museum games on PS1. They all feature these elaborate museums displaying game history, sprites, music, motherboards, and other random goodies. You can walk around them just like a real museum -- it's quite a comfy experience. I found most other compliation games a bit boring, to be honest, especially if you've already played most of the games included on them once or twice before... though they absolutely are a great value most of the time.