What are some good acoustic covers to learn?

[memoryzero]

So my roommate and I are in the process of starting an acoustic act (he sings I play guitar)

This is a list of songs we have down so far

1. Shinedown- Save me
2. Seether- Broken
3. Fuel- Innocence
4. Foot Switch- Have to learn
5. Alice in chains- Rooster
6. Trapt- Headstrong

What would be some cool acoustic songs that you would want to hear if you were out at a bar ? We are trying to stay as close as we can to mostly rock songs but I need some good suggestions.